You will need a rip kit or rip tutorial for the game that you are wanting to copy. This will downsize it to fit onto a CD and get rid of the DVD Checks. Burn it in your favourite burning s/ware following guides from
www.psxcopyworld.co.uk
Best media is Verbatim, other branded work fine, some unbranded work fine. General test for CDR's if you can see right through it easily it probably won't give a good copy.
For rip guides/kits
www.ps2ownz.com