Alrite, we were all n00bs once (and I for the most part still am), I know how you feel. I cant really give you a lengthy tutorial into the linux filesystem structure as I don't have the time or the experience. If you are familiar with the windows interface you should catch on alrite. The Mandrake filesystem may differ to Fedora (my OS) but normally the setup is as follows; the systems main folder or more commonly reffered to as filesystem, is usually /. (eg / is similar to C:/ and /src is similar to C:/Windows.)
All linux files are located in this file structure. /root contains the system administrators file and cant be used by anyone but root. /home contains all other users. An example of the branching of /home is /home/guest. Where guest is a user on the system. Lost? I would be. One last thing. /mnt is the directory where all CD, DVD and floppy drives are located. for example /mnt/cdrom is your cd-rom drive and /mnt/floppy is your floppy drive. Another use for /mnt is for "mounting" windows drives. This is a difficult process, but once done you can use your windows files in linux. For example, /mnt/windows, would be a shortcut to your C:/ drive. Again I must stress this information is relative to Fedora and Mandrake may differ.
Now, onto your problem. First you must be logged in as root. To do so, type
then a prompt will come up asking you for the root password. You should've set this up during the install, but im not sure how far you went before you encountered the problem. Hit enter when you finish typing the password.
Ok now, Im not sure about Mandrake, but on Fedora, go to the Nvidia linux drivers website:
Before you download your driver, specify a suitable location to save this file to. This part will be hard if you dont have a GUI and Im not sure how to do it in Mandrake (but I assume its universal). If you can choose where you save it, make a new directory by doing the following
for the time being, the file will be saved in this folder. Now download the nvidia driver suitable to your system (I use IA64, not sure what you'd need). Save it to /nvidia. Now with a bit of luck you can install the drivers. Navigate to the filesystem:
cd /nvidia (cd = change directory)
In this example, I use the Linux Display Driver - IA64.
Adjust the ending letters/numbers so they correspond with the package you downloaded.
After this is done, and all is well up to this point, you may be ready to reboot with a GUI. If this dosent work, the readme you asked about is actually online for quick and easy reference:
(this link specific only to the IA64 driver)
I hope this info helps.
NOTE: This will be even harder to do (considering you arent familiar with Linux) if you don't have the net. But let's not think about that yet.