If I look under Display Properties, the XP theme is there, but again looks like the Classic Windows theme.
I don't know exactly what I have done or how to recover the standard XP windows and task bar, but if somebody can help it would be very appreciated.
Computer Profile Summary
Operating System Windows XP Professional Service Pack 2 (build 2600) Processor Intel Pentium 4 (2 installed)
512 kilobyte secondary memory cache
Board: http://www.abit.com.tw/ IC7/IC7-G(Intel i875P-ICH5) 1.0