help!

[bigorangekitty]

stupid question, i'm a newbie still searching the forums...and sometimes i get stumped, but usually catch on quick... anyhow, i'm installing a usb mod in my ps2 v.1 (not installed yet), and i thought i would go ahead and take a look at my gameshark v2.2, and it will NOT load... and if i hit browser, it says "disc read error"... any idea whats going on?
help much appreciated~!

[charlie_ps2]

Either ther's shit on the disk, or the lens is dirty, or the pressing of the disk is bad. So clean the disk and the lens (with a CD cleaning disk) and if it doesn't work exchange the disk with your supplier.