usb to serial drivers

I purchased a usb to serial cable off ebay about 6 months ago, never used it, and managed to lose the driver cd over time.

I finally found a use for it yesterday, downloaded/installed the drivers for the device im plugging in, plugged in the cable and its telling me

Device driver software was not successfully installed, Usb2.0-ser! no driver found.

Ive googled and tried a few different drivers w/o any luck. Does anyone have some suggestions. Im using windows 7 if that helps any.

The USB-2-SER does not have 64-Bit Drivers to my knowledge (I have one as well). It seems to work in a 32-Bit OS, but I've yet to get it to work in W7-64.

I just picked up this TrendNET TU-S9 cable and it works perfectly in W7-64:

http://www.amazon.com/gp/product/B0007T27H8/ref=oss_product