Hi Wei
You can try GPMAW. It's not freeware but you can donwload a demoversion and
try it out.
best regards
Thomas N. Krogh
Thomas N. Krogh, Ph.D. ph. : +45 63 15 20 39 or 30
Protana A/S fax : +45 63 15 20 40
Staermosegaardsvej 16 mailto:krogh@protana.com
5230 Odense M http://www.protana.com
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