Default Nexus 5 Tethering on windows xp pro help.......

So i have a google nexus 5, and when i try to tether using my phones wifi signal on my pc, it says it doesnt connect. When i tried this with windows xp using usb tethering, it wont allow me to tether saying that RUNDIS is not installed.........heres the things i did do
1. uninstalled and disconnected device....no go
2. installed lg unified driver...no go.......
3. downloaded the tetherxp.inf file from google....no go
4. downloaded the hotfix for xp- heres the link http://support.microsoft.com/kb/959765...no go
5 tried using usb debugging......it wouldnt even install MTP drivers

I am using a dell Inspiron 700m laptop using windows xp pro sp3.....please help........