Bestdata Mach2 PCTEL modem drivers

[bambam]

Okay - so its not the greatest modem ( but only a $5.00 gamble -cost a after rebate). And yes it does not perform very well (it sucks). However I would like to find a source for hopefully better drivers / strings etc than the those on CD labeled MSP5800 Full Power Modem v1.0 which came with this modem.
Other than the Bestdata site , where can I find them ?

Thanks