Windows 7 Help Acer Aspire M1100 - No Wired Network

I have recently upgraded my Aces Aspires RAM and then realized that the additional RAM will only work in Win7 64-Bit

This I went out and bought Win7 64Bit and installed it, before the install my PC was working just fine, but after the install I have run into a whole host of issues.

1. My LAN Network Card stopped working, I have downloaded all sorts of drivers and none worked

2. My Asus EN210 Silent/DI/512MD2(LP) also stopped working, only one screen comes on and Win7 keeps stopping the driver

Please help, I'm at my wits end here...should I just buy a new network card and graphics card? Which once are guaranteed to work with my machine as I found loads of posts on the net stating people have bought things and it just does not work with Win7 64bit...I cant afford to waist money like that.