Need Zoom PCI Cable Modem drivers for WinXP or Vista - not the .exe from the website, but the .inf. Help!?

I've been using the Zoom PCI Cable Modem (model 5001) for several years now. I recently did a mjor upgrade of my computer including Vista. Unfortunately, the manufacturer only has drivers up to WinXP, and only as an .exe file. What I need are the .inf driver files contained in the .exe. When the .exe unpacks, it creates files called data1.cab and data2.cab. However, I can't look into these files with WinZip or WinRar. Please help me with this as the manufacturer (Zoom) won't. Thanks.