|I can't find anything on that motherboard. To be honest, I haven't heard of that brand before. I found a site for them but no motherboards are listed.|
The issue is this. Your motherboard needs to be 48 bit LBA compliant in order to access hard drives larger than 127GB.
I think your board may be 48 bit compliant but am not sure. The largest hard drive for a 28 bit compliant board (the old standard) would be a 120GB model.
If all you want is a 120GB drive then below is a link for one. That size is hard to find.
My suggestion would be to first look at your motherboard to verify you have an open PCI slot. Then buy a hard drive larger than 120GB and install it. Upon the first boot watch to see if the BIOS properly identifies the new hard drive both by model and full drive capacity.
If it DOESN'T identify by FULL drive capacity you would then need to add in a controller card, which would allow you to use any size drive.
Post back stating if the 120GB will be OK or if you want to try for a larger drive, which may not work without a controller card.
BTW, have you checked to system requirements to run Windows 7? Also, are you sure the only hardware you need to replace is your hard drive?