virtualbox.org

I just installed WinXP SP2 as guest system on Windows 7 as host. I installed the guest additions and everything works fine except: there are no network drivers. I don't know why but they are just not there and therefore I have not network connection.

What can I do or what did I wrong?

If you changed the default interface emulated type, then you need to manually install the driver. If you didn't, then you have a modified XP, as the default pcnet adapter driver is shipped with XP. We don't support modified XP versions.
Btw, you should have gone with SP3 in it, SP2 is old.

Set it to Intel e 1000 and install drivers from intel homepage.

I just tried the intel driver thing and it works now. Danke, Stefan.