CD Drive Reading All Blank CDs as 595MB Instead of Real Size

I have recently got this problem since I reformatted my
computer. Whenever I insert a blank CD into the drive it
says that it has 595MB of free space. All of my CDs are
700MB CDs. This did not occur prior to reformatting.

I have an HP CD writer. It is several years old, but
again the problem has arrisen from reformatting and
reinstalling WindowsXP, not from my hardware.

Any help would be appreciated.


Jim