ok, if you want to install youre 2-nd harddrive...it should be located in /dev/hdb. has youre hdd only one partition? is it the wondows hdd?
we say it is only one partition, and ...you can install it this way:
shows all partions of youre harddisks
you get root privileges
makes a directory where you find the files located on youre second hdd
mount -t ext3 /dev/hdb1 /mnt/drive2
mounts the hdd to the directorie
to automount youre hdd at every boot edit youre /etc/fstab and add this:
/dev/hdb1 /mnt/winguest auto defaults 0 0
if youre "fdisk -l" shows other partitions, you have to change hdb1 to the other one.
hope this helped you!