Forgive my ignorance, but how well does the Pelican PS/PS2 -> PS3 converter work for MAME? Specifically, I’m running MAME in OSX but will have a windows version available soon. Are there any other converters that are commonly/highly recommended?
Thanks in advance!
I don’t know that adapter, but these URLs may be of interest in your research: http://www.stepmania.com/wiki/USB_Adapters , http://www.play-asia.com/paOS-13-71-6m-49-en-70-29d-40-1.html#reviews . I came across them yesterday. It’s tough finding a reliable - lag-free - adapter. 
It’s not tough to find a reliable lag free converter if you read the converter thread.
http://forums.shoryuken.com/showthread.php?t=132493
It’s listed in the stickies up top.
I fail 
What kind of stick/pad are you using?
It’ll be for custom sticks w/ PS PCBs.
Somewhere out there shoo is crying and doesn’t know why.
If you have a radioshack near you, get the converter from there. It works flawlessly with Dualshock PCBs.
pelican converter
jesus