PS 2 Modchip problems HELP!!!!

[thesaint3500]

Hi all!!

I have just brought a modchip from www.modchipworld.co.uk here is a link to it: http://www.modchipworld.co.uk/playst...ol.html#1210x0

now i did not know this at the time, but i got hold of backups which are dvd rips to CD-r (medal Of Honer, Fur Fighters) and they do not work? I have been told that i can not play any backups above 630Mb, is this correct? If anyone can advise me, i would be forever in you debt!

Thanks ALL!!