this thing will play imports if i get it working right? and if yes i will be on the hunt for some import goodness now 
Yes. I think all the pro action replays have the 4 meg ram built in, so the only game you can't play with it is some SNK fighter, which had its own rom cart.
There are PARs with, and without the 4MB function. The Game Shark is a US branded version of the original PAR. I'm not sure how to tell them apart externally without a sticker. There might even be a 1MB PAR, but I can't remember. I'm pretty sure that all the 4MB equipped ones have that parallel port on the top though, so hopefully you have the good one.
There are also several thousand of the 4-in-1s that were released after Xmen vs SF, but before any other 4MB game, that only work correctly with XMen vs SF until a simple mod is performed. I had one of these. I think all you have to do is run one jumper wire, and maybe cut a trace somewhere. If you don't do the mod you get weird background dropouts in Vampire Saviour. I'm not sure what it does on the newer games because I fixed mine after VS came out.
Once you have it though, yeah, you can play anything except KOF '95, Ultraman, or this one Tamagothi game, the exact name of which escapes me at the moment.
However, you won't want to, and here is why; the Saturn cart slot is the absolute worst cart slot in the history of gaming. This is almost certainly the reason why neither of these carts work for the guy. He simply didn't do the correct magic dance of powering down, removing, re-insterting, and powering up a hundred billion times until the things worked. To deal with this BS less often I just modded my system. It still gives me shit when I change to another cart, but its loads better than a PAR.
Eventually I bought a new switched Japanese Saturn. It didn't take long for its cart slot to start acting up either. Now that the Netlink is pretty much useless I only switch carts when I need to use the save backup cart for strategy games so it's nowhere near as bad as when I was switching the NetLink with the PAR, and the back up cart on an almost daily basis. In the end though I highly recommend getting a mod. For as much as I think PCE converters are a stupid pain in the ass, Saturn converters are even worse. The main problem isn’t the converters themselves, but the cart slot. However, in addition to all that crap I just said, you also can’t save directly to a PAR’s save space in-game, and you can’t use the normal save backup cart when the PAR is in use. This isn’t a problem with stuff like shooters and fighters, but stuff like Sega Rally, NiGHTS, Firepro, and many strategy games will eat up your save space really quick.