Ericsson card & Internet activated t-mobile sim / g1 phone compatibility?

I have an Ericsson pcmcia card that I can put into my laptop. It takes the Internet activated sim chip so that I can use my laptop to access the Internet. Looks like the new G1 phone doesn't allow me to do the same, so I would be stuck using only the G1 phone for Internet use.

Is there a work around, or maybe someone should write a program to make this work.