Seems we've had an influx of these posts lately so I'll do two things:
1) use the search feature. It helps.
2) Register globals is turned off for server security. Having it turned on can allow an illicit user to gain information that would be _bad_ for them to have (I'm not a server admin and dunno exactly _what_ they could get, but I'd also not like to find out by having my data deleted by said illicit user).
You're basically stuck either finding a host that has register_globals enabled, or by finding another commerce system that doesn't require register globals.