Leopard CD not showing in PC CD Drive

[Robino]

I recently installed bootcamp and loaded Windows XP on my IMac and installed OS X disc and all was good, but I realized after doing so that I needed to partition larger, so I re-installed boot camp with a larger partition for Windows. After loading Windows XP w/service pack 2 I went to put my OS X disc in and it would not auto start. So, I opened My Computer, went to the "D" drive and tried to open it, put it said the CD was empty. I put other CD's and DVD's in the drive and they work, so it isn't my drive. Why can't I install the drivers now, when I could before. I am ready to scream, please help.....