Ok, in the mean time, I get this error:
warning terminate worker thread 0
If i try to start Apache and IIRC, this had to do something with port 80 being in use.
Any idea which services that was in windows?
Never mind, i found it! It's the service:
World Wide Web Publishing Service
Which you have to disable in your services window in order to start the Apache service.
For the record, i'm using vista x64 bit.
Hope it helps.