So I got a laptop that has 512MB RAM and Vista Basic. Even with only Basic, it's very laggy. I took the Windows XP CD I had before and I overwrote Vista Basic, and of course it's much faster. The laptop I bought came with a wireless card built in, like most laptops. The problem is, when I overwrote Vista, it seems as though the driver for the wireless card disappeared. It doesn't show up when I turn on the computer. I'm on the computer right now, but the only way I'm on the internet is because I took the wireless adapter from my desktop and put it on here. Any way you know of to fix my problem so I can just use the laptop's built in wireless card?