I'm pretty sure that any GSM network supporting GPRS (which means 99% of GSM networks) can be used to activate the phone if your carrier is in the phone's data settings database (search the forum for "CarrierNetworkSettings.db3"). It seems that your carrier is not supported out of the box, so the following has to be done:

See the Meta doctor link that rvn84 posted. Activate your phone using WiFi and then modify the APN settings by hand in the Phone settings app to get GRPS data service (some info regarding older firmware is in Carrier/APN settings for 1.13 German and 1.21 US thread).