Win98 & PWS & PHP4 (Installing)

[Anon]

I would love to learn PHP but before I can start I need to get it running. I currently have Win98 & PWS installed and have downloaded PHP4 but I can't find any advice on installing PHP4 (every article I have found explains how to install PHP3). Iam a complete novice at PHP so is there any idiot proof instructions on how to do this?

Many Thanks

Mark