Hello,
I didn't use AmiWeb2C since ages but it indeed worked pretty well. More than for any other program, the secret to succeed is to carefully read the documentation. And you will most probably need to find a contemporary texlive cd (around 1998 iirc). I would be very surprised indeed if you could use a current one. But it should be possible though to use some more recent packages once all is properly set up.
Edit: about the possibility of using an archive of a previous installation, to be honest I don't think it will work. Unless perhaps if the said archive is from an installation really done on a clean freshly installed system. In particular amiweb2c relies on the proper work of kpathsea which is very touchy about the placement of files and the correctness of assigns. A fresh install seems definitely easier to me.