what kind of stuff do you have now? what model gigabyte board? what cpu?
You know, you CAN get a nice pci IDE controller that will allow you to use your new drive.
Even something like this raud card
http://www.dealsonic.com/syulata133id.html its $20 shipped....you can find em cheaper for instance without RAID (which you dont need)...I just couldnt find any right offhand.
Lots of people in this forum buy the big 160g and above drives and they come with controller cards that the people dont need. SO maybe you could luck up and find someone to ship you one for maybe $15 to $20.
JP