Rip the game on the PC to an ISO file.. then use WinHiip to install the game....
have you checked the compatability list at www.ps2hd.com?
This will help you find if a game is compatable with HDL... and if a patch is needed to fix it for HDL.... also you might want to look into ExPERT... a ISO shrinking program... to save precious space on your HDD.... I've shrank about 15 games of the 50 that I have and saved over 20GB of space... which is enough room to install up to 10 average sized games... I'm shooting for over 100 games on my 300GB HDD.
I'm not sure how to rip the game... seen quite a bit about using DVDrypter, Apache, and Alcohol 120%.... But I've not used any so far...
Info and download of Expert
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