Premiere 5 Audio help

Ok, so here's the deal; just got an new (to me) computer with XP SP2 on it. Uploaded Adobe Premiere 5. When I import an .AVI clip, I get no audio what so ever, even though the clip plays in WM fine. I've looked through everything I can think of within the programme, as well as in the sound section of th control panel.

Any ideas what I need to tweak to get P5 to play the audio as I watch the clip?

Cheers

Bill