Then you sir are in luck. USBModem works on Tiger. Also im not sure if this is a plus or not, but you wont need that dongle.
http://www.mobile-stream.com/usbmodem_wm.html
If you are looking for a free solution i can type up how i connect on my MacBook, but i use leopard, so im not sure if it would be the same... Let me know.
Now playing on iTunes:
Styles P./Fat Joe/ Wyclef/Snyplife - The Way We Get Down (Produced By DJ Green Lantern) via
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