If anyone could help me I'd be really grateful.

Whenever I try to access the sharepoint homepage with my mac on the
network, MacOSx, IE 5.2, I get asked to enter security details but it
still doesn't let me in.

If I repeat the process on a PC I get the expected reults with the
same account details.

I have equal amounts of love for both PC and Mac so am not looking to
start a cat fight here.

Any ideas or links to ideas would be really really useful.