Your drives are located in /mnt. You probably have /mnt/hda and /mnt/hdb as your hard drives and /mnt/cdrom as your cd drive. These are just guesses though. If you don't even have your second hard drive mounted there, then you'll have to do a little work. First, type
at a command prompt and see what comes up. See if you can find where it displays information about hda and hdb (if that's what it is). If your second hard drive is /dev/hdb, then you can mount it when you need it. You have to know what filesystem it is and what not too. Generally it's:
mount -t <filesystem type> /dev/hdb /mnt/drive2
where <filesystem type> is something like vfat for fat32, xfs, reiserfs, ntfs... /dev/hdb is what linux sees the drive is (you can get this from dmesg), and /mnt/drive2 is the "mount point" where you want to be able to access it. You can of course rename it to whatever you want like /mnt/windows or /mnt/data depending on your preference.
If you want to set it to mount automatically at boot, then you'll have to edit your /etc/fstab file properly.
Some day I'll be rich and famous for inventing a device that allows you to stab people in the face over the internet.
Good plan on the mandrake. You'll like it much better...it's a lot more windows driven. However, I'd still go out and get a for dummies book on linux if you'd really like to know (those books helped me learn stuffs) more about linux.
<b>It is always brave to say what everyone thinks. </b> <i>Georges Duhamel</i>