54Mbps Wireless Network Card driver for Win7?

well try visist the company who made the card they must have a fix for it on there home page

Sounds like these .dll files are not exactly missing, nor are you infected. The difference with Win7 & Vista's core is this, that not only does it operate a "program files" directory, but an x86 (32bit) directory EVEN IF you're using a 64bit version of the OS. What you need to do, is change the install directory. Try doing this, google for an app called "Revo Uninstaller". Download, and install it, and run it. Find the C54Ri installation, and uninstall it by right clicking it in Revo. Then, go to "advanced uninstall". Choose to remove it, then, it will give you the option to move forward, choose next, select all the registry entries. Delete. Continue your way through the app. Once completed, run the installation CD again for the device, this time, manually choose the install location, and find the x86 program files folder to install to. After installing, the .dll files should be in their proper location, IF BY CHANCE THEY ARE NOT, you can navigate to the hd folder, windows, system32, and manually place them there.

This is an issue many have w/ Windows 7 and the 64bit version being "unstable" even though it's available for purchase. I do not suggest using the 64bit version, as I've tested it, and experienced many issues like this. Hope that helped.