Pro Tools & Internet on same computer,good or bad?

[fmbighair]

Hello, I am new here. I just bought a Pro Tools Digi 002 Rack system and a Apple G4 powerbook "12. It is my only computer so I will be using it for my audio/video stuff (mostly pro tools right now) but will also use it for the Internet to download stuff, word processing, etc...

Now, I have heard that if your doing audio that thats all you should use the computer for because the internet browser software (internet explorer, Netscape, etc) can possibly corrupt some of the audio files or something like that?...Or maybe that I would run the risk of downloading a virus and infecting my audio files ?.....

So I am wondering if I can get away with using Pro Tools and other audio stuff on my powerbook and use the internet as well and not run the risk of potentially infecting or currupting audio stuff?...I wish I had enouph money right now to get a computer for each, but i don't....

I think it should be alright to do both, but have heard otherwise...I figured I would ask around first before I go ahead and buy a virus protection software for 100 bucks and install internet explorer....

ANY info would be appreciated, thanks
-me