VM Fusion USB Modem Problem

Hello,
I recently purchased a MBP and am running vmfusion with windows home xp.
Unfortunately I still have some windows applications that I need to run. The MBP of course does not have a modem. So I purchased a Zoom usb modem to use to fax out of windows applications. No go. I can not get it to work as a fax modem using the native win/fax software. I get an error message every time.
However, I can use it with their software which is cumbersome to use with applications. I can get the modem to dial out and pick up but not to fax. I have spent hours googling a solution and with Zoom tech support to no avail. Zoom admitted yesterday that they have not tested their modem on mac with vmfusion. It is not a hardware problem. The usb ports work correctly.
I wondered if anybody had any ideas or perhaps a solution to using a modem in xp with vmfusion.
Your help is greatly appreciated!

 

Vm fusion with zoom modem

Thanks for the input.
When I purchased the software I was assured that the virtual machine would act just like a pc and support all of the same devices when running windows xp. My active sync, dongle bluetooth, and verizon usb wireless modems work with no problems.
This zoom modem however is not in the microsoft HCL. Zoom says it is.
Using their software I can send out a fax from the vm in xp.
It is quite difficult. You have to save the file you are sending. Open their software. Find the file and set the file type. Enter the fax info and send.
It would be quicker to simply print the document and put it back into the printer and send as a fax.
Thanks again for your input.