GSM Center Error 2 ?

hello (sorry for my bad english)... i want to use the boomarang libery, but first, i want to check, if my HSDPA modem works with this libery. if I switch "ON" in the GSM Center, I get this message: --------------------------- GSM Center --------------------------- Error 2 Das System kann die angegebene Datei nicht finden in function: CreateFile. --------------------------- OK --------------------------- i dont know ??? can anybody help me !? thx, sky... EDIT: i use this modem: HUAWEI E220 HSDPA USB MODEM (virtual COM2)