3G service HTC Magic(Mytouch)?

Hi all,
I bought HTC MagicMytouch) from Taiwan and brought it to U.S.
And My cellphone company is T-Mobile.
Could I use the 3G service with mytouch?

Here is the Magic Specs from Taiwan:

HSDPA/WCDMA:
900/2100 MHz
Up to 2 Mbps up-link and 7.2 Mbps down-link speeds
Quad-band GSM/GPRS/EDGE:
850/900/1800/1900 MHz

Thank you....