Lou: Your best bet is to get an emulator and play NES / SNES Versions of the older games. They work great and are portable on the PSP.
carnival73: I believe they finally pumped out the English translation for that one really awesome SNES remake that previously could only be found on that one 'Play in browser' site.
ISOs can be found for the last two in the series. Not encouraging it but also not condemning it seeing as it's either that or hoping the few kids on eBay with it will show mercy.
If you are speaking of "Wizardry I-II-III - Story of Llylgamyn" it was a SNES Japanese only release and I am currently playing it with the English Translation Patch on the PSP. I love the upgrade wall textures, mob graphics, and dungeon mapping. Great Game.