I bought one of those Tac converters for Guitar Hero. It is ps3 to ps2 converter and was only 20 so I thought I might give you guys a heads up. It worked worked wonders with my hrap 2 sa and I have used input lag test with got good results. You can get it off ebay, tac website, or for you on the east coast video game central. Enjoy.
There is a converter thread and that converter is not lagless.
Sorry in that case I just seen the convertor thread you can close this.