I have Slack 9.1, with NFS package installed. I've searched all over the internet for help setting it up (trust me). Slack recognizes my network and I'm able to ping all three computers just fine. However, when I mount nfs, or so I think I have, I'm unable to share my files and I get the dreaded "permission denied" stamped accross my screen. I was just wondering if there was someone who could help me out with nfs. I don't use hostname's by the way, when I mount nfs, I use the actual IP address.

Simple setup. Make sure that nfs and portmap are running by checking:
$ ps -aux | grep nfs
$ ps -aux | grep rpc

Setup /etc/exports (on box corvette) (box you want to access)

/mnt/store *(rw,sync) ## /mnt/store is one big storage partition I have. Always mounted on corvette.
/tmp *(rw,sync) ## /tmp is something usefull
## setup /etc/exports as you need to.

Then as root execute /usr/sbin/exportsfs

Setup mount point (on box mustang) (done once)
mkdir /mnt/corvette
I set group as users and add users to group 'users'
# chown root:users /mnt/corvette
Setup /etc/fstab (on box mustang)
corvette:/mnt/store /mnt/corvette nfs rsize=8192,wsize=8192,noauto,user,rw 0 0

Notice, Corvette is setup in /etc/hosts. I use noauto as I only want to mount covertte as I need it. So I enter;
$ mount /mnt/corvette

Access complete.

Thought of another access method you can do in KDE konqueror.
At the location bar type;
fish://<computer-name> -or- <ip> (linux only, no windows)

Enter your password. You will probably be in your home folder. Up arrow to /

This is real cool.

I agree with you on that 'fish' trick. Thanks for that tip!!

OK, I did the file editing for the not-so-easy nfs method but I'm still getting the same error I was getting - Can't get address for...

Any idea why this is happening? It happens just the same when connecting from either computer.

I didn't edit the /etc/hosts file...didn't know exactly what to add, but the error is the same now as before when only adding this entry to the exports file:
/dir/shared computer.name(rw)

thanks for your help.

Are you Nappa? Missed the error you are talking about.
Anyway, what's the error? Are you running a firewall?
$ ps -aux | grep portmap
and tell me what you see.
For now, change computer.name to *
Did you run exportfs?

No, I'm not Nappa...just messing with the same problem.
portmap showed:
root 17524 0.0 0.3 1484 460 pts/0 S

ran exportfs, made the change to exports and still getting the error: Can't get address to <computer.name>