If you dont plan on using it for XBL ever, you can flash your TSOP. If you want to keep the option open for XBL, then softmod it. There are a couple of ways of doing this without spending alot of money. For instance, you can make your own xbox controller/usb plug. 1a.
splinter cell i found is the cheapest.. 5.99-7.99 @ gamestop1b.
break away cord.. 3.99-4.99 @ gamestop1c.
search the gamesave exploit forums for a copy of action replay... free2.
you can hotswap (wouldnt suggest it)3.
or like spud said, find someone with a modded xbox and they can put the gamesaves on your memory card for you
follow this tut and it will show you how to make an xbox controller/usb cord. it also shows you step by step how to softmod.http://how2xbox.tk/