I'm fast slipping into insanity!

[I've been using limewire for a long time. The first version I had I think was 1.5. Then I made a dreadful mistake and upgraded to a newer verison that was less stable than my previous version. So much so that it was to all intents and purposes unusable. So I stopped using limewire for a few months.]

Now I've bought the latest pro version and find that I'm still experiencig many of my earlier problems.

The icons disappear and the whole thing freezes. It's ridiculously slow to redraw screens, and the desktop doesn't redraw at all.
I've got a G4 (single 400 processor), OS 9.2.2, 128mb ram, 129mb virtual memory & no other programs running - except occasionally MSIE.

I've tried increasing memory allocation but if I increase it to 64MB as suggested (I presume that I should enter 64000 in the memory panel under get info in MAC OS) but when I do so it doesn't load at all). It's on 12000k at present but there's no noticable improvement.

Please could someone help me out here?!? (Cheers, Sally-Anne x)