I first want to say thank you as this site really helped me with my Dell D630! The search for information on the Dell D630 was quite easy, however I have been looking for information on using Windows 7 with my Dell Optiplex GX280 is not so easy. Can someone direct me to information on whether a BIOS has already been modified for the GX280 or if it is even possible? Thanks again!
With andyp's tool v1.29, you will be able to make yourself a gx280 a08 slic bios! See sticky andyp's tool thread. I made and flashed it today.