need to use GSM Data SIM ( not voice) on IFONE for internet

[cipijoint]

I have a nice Ifone 3Gs 16 gb. I dont need to use it as real voice phone, just for hot applications, including maps gps google maps etc.
I would like to use a DATA internet SIM ( that usually use in stick gsm modems for laptops example ) .
This data internet sim inserted in the Ifone, and some application to transform the phone in modem to understand the DATA gsm SIM and get internet directly in IPHONE.
anybody knows some app?

[fijiman]

Mywi..PDAnet...create your own "hotspot"...all it cydia

[cipijoint]

thanks, i will search MyWi and PDAnet