Can't troubleshoot services in XP pro - RPC, Firewall not working

I was tweaking my services on Win XP pro & managed to mess things up a bit.
I am now unable to start most services including firewall, RPC, audio, win installer, networking etc. I get mostly Error 1068 can't start dependencies. Web Client service is stuck on 'stopping' even after several reboots.
I am unable to open properties dialog for individual services also.
Computer is somewhat functional, has internet access though it is totally unprotected as I can't get antivirus to start. Copy & paste is also not working.
I am unable to restore. I have tried safe mode but nothing. I tried to edit the registry to start the RPC but it didn't work (perhaps was wrong set of instructions for problem). The RPC startup seems to be enabled but says it can't start error 1058, no enabled devices associated with it.
I don't have XP disc so I can't go into recovery either. I have procured XP support tools but can't install it.
I have tried everything I can think of.
Any help is appreciated.

D

 

I found a solution after all:
http://support.microsoft.com/kb/838428
Thanks anyways.
D
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