I'd think it wouldnt be too hard to do , but the driver for all 3 of my serial devices requires you to pick a com port through each of thier respective driver softwares, and it seems like the com port information would get lost through USB...or does it?
I've used a keyspan usb to serial convertor on my boss' pda cradle. The software include will emulate a com port, so any software requesting a com port will be able to choose a com port. Make sure you get the latest drivers.
We use a similar product here at my work, I know the drivers it comes with usually makes the USB port into something like COM11 and then you can use that like a normal COM port.
All the new HP laptops we are getting have these w/ them.
They actually work pretty well. We have a couple that use serial connections all the time for "special" needs. They used to call all the time saying they couldn't get them to work.