So I installed Fedora Core 3 and I'm trying to get ndiswrapper up and running but I ran into a problem. I make installed it and here's what I got:

[root@localhost ndiswrapper-1.0]# make install
make -C driver install
make[1]: Entering directory `/home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver'
make -C /lib/modules/2.6.9-1.667smp/build SUBDIRS=/home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver \
NDISWRAPPER_VERSION=1.0 \
EXTRA_VERSION= modules
make[2]: Entering directory `/lib/modules/2.6.9-1.667smp/build'
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/hal.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/iw_ndis.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/loader.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/misc_funcs.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/ndis.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/ntoskernel.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/pe_linker.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/proc.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/wrapper.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/usb.o
CC [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/divdi3.o
LD [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/ndiswrapper.o
Building modules, stage 2.
MODPOST
CC /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/ndiswrapper.mod.o
LD [M] /home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver/ndiswrapper.ko
make[2]: Leaving directory `/lib/modules/2.6.9-1.667smp/build'


*** WARNING: Kernel seems to have 4K size stack option (CONFIG_4KSTACKS) removed; many Windows drivers will need at least 8K size stacks. You should read wiki about 4K size stack issue. Don't complain about crashes until you resolve this.


mkdir -p /lib/modules/2.6.9-1.667smp/misc
install -m 0644 ndiswrapper.ko /lib/modules/2.6.9-1.667smp/misc
/sbin/depmod -a
make[1]: Leaving directory `/home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/driver'
make -C utils install
make[1]: Entering directory `/home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/utils'
cc -Wall -g -DNDISWRAPPER_VERSION=\"1.0\" -c -o loadndisdriver.o loadndisdriver.c
gcc -o loadndisdriver loadndisdriver.o
install -D -m 755 loadndisdriver /sbin/loadndisdriver
install -D -m 755 ndiswrapper /usr/sbin/ndiswrapper
install -D -m 755 ndiswrapper-buginfo /usr/sbin/ndiswrapper-buginfo

NOTE: Windows driver configuration file format has changed since 1.0-rc2. You must re-install Windows drivers if they were installed before.
make[1]: Leaving directory `/home/geoff/Desktop/ndiswrapper/ndiswrapper-1.0/utils'
mkdir -p -m 0755 /usr/share/man/man8
install -m 644 ndiswrapper.8 /usr/share/man/man8

Seemed to install fine except for that 4K warning thing, right? yet when I type ndiswrapper -i and path to my ini I get this:

[root@localhost ndiswrapper-1.0]# ndiswrapper -i /home/geoff/Desktop/ndiswrapper/bcmwl5.inf
bash: ndiswrapper: command not found

Need some help, if you please.

ignoring everything else because you said looked fine, i see
i'd say you might need to fix that. either it ain't in your path, or something... been some time since i worked with ndiswrapper, i don't remember the specifics offhand...

if you're really lost, you could always:
find / -name ndiswrapper

I tried the find and came up with nothing, which is weird to say the least.

like i said, it's been some time since i worked with ndw... looks like a bad install, though...

whereis ndiswrapper & which ndiswrapper should give you some ideas about the path. Otherwise, updatedb and locate ndiswrapper.

umm... not quite:

--which searches your path.. and if it was there, (s)he wouldn't be having this problem... whereis might get you further b/c it searches "standard Linux places" ... but not if you have a good $PATH

Thats a good build, if you are worried about the 4k stack warning then visit ww.linuxant.com to get a rebuild with 16k kernel stack sizes. Your problem is your path to ndiswrapper isnt in your bash_profile:
It'll most likely be in
/usr/sbin/ndiswrapper - in fact it is. Check your make install output just above NOTE and you'll see its installed it there.
Cheers
Chris

So if it's not in my bash_profile, how do I use it?

/usr/sbin/ndiswrapper -i /path/to/driver/here.inf
will get your driver installed.

And from then on instead of typing just ndiswrapper I use /usr/sbin/ndiswrapper?

And what's an easy way to check my architecture so I know which driveloader to download?

Nope. It wont add it to your bash_profile but one step at a time eh? You wont need to path to ndiswrapper again unless you upgrade your kernel (which no doubt you will after getting internet working). If you want to be able to just type ndiswrapper instead of the full path then you need to add
PATH=$PATH:/usr/sbin
to your bash_profile which is located in your home directory.
Btw, if you want ntfs support you can get it here
http://linux-ntfs.sourceforge.net/rpm/fedora3.html
but like I said, one step at a time!
Cheers
Chris

check your arch with the following command in bash
rpm -q --queryformat "%{ARCH}\n" kernel
cheers
Chris

Hey, thanks so much for your help, I shall be apply these tips tonight.

My pleasure. I'm very drunk now so I'll think I'll go to bed. Let me know how you go.

Okay, so /usr/sbin/ndiswrapper worked perfectly and I thought I was making real progress until I ran into a problem. I can't modprobe ndiswrapper.

Where is modprobe supposed to be? Does it come with ndiswrapper? Is it a separate package? And does it come with FC3?