(Grrrr - why is it only this this site that ever seems to crash Firefox on this machine????)

Did you post the right link???

Ooops. Let's try this one:

http://forums.ebay.co.uk/topic/Seller-Central/Kaspersky-Mcafee-Activation/18000434504

Might it be worth trying Word under WINE? I've yet to try WINE, but have an idea it supports MS Office (no idea whether that includes the later versions, though.)

I can't help wondering whether that might not introduce MS type vulnerabilities, though. Presumably not - at least nasties are less likely to spread to the kernel etc.