I've just reninstall Windows XP SP2 but I have the following error at

Source: RemoteAccess
Category: None
Event ID: 20151
Date: 7/04/2007
Time: 22:42:21 PM
Type: Error
User: Compaq
Computer: COMPAQ
Description: The Control Protocol EAP in the Point to Point Protocol module
C:\WINNT\System32\rasppp.dll returned an error while initializing. The
network request is not supported.

What causes this problem and how can I fix it?