By default with only one hard drive plugged in and no zip drive interference the Windows installer will automatically assign C as the drive letter. All you do now is simply perform a full install without the zip drive or another hard drive plugged at the time to see the new copy seen as C.
The outputs on the newer cards will be DVI seeing a vga type adapter plugged inline for use with crts or older lcds. The newer lcds now are both vga and DVI capable coming with two different input cables. When you look at the photo here you can the primary and secondary outputs on a recent card.
The adapters at the link on the other thread are what you will find included when buying a new card in a retail box. They simply allow you to use a vga monitor with a newer model card seeing twin DVI outputs like seen in the photo. Buy a card from a vendor like newegg however rather then some of these off sites.