I have been using TeamViewer for this for some years. It works quite well, is localized so less computer literate parents outside US/UK have a chance of running it, and is free for personal use (even on weekdays :-P).
Windows Vista, 7 and 8 come with "Remote assistance" which I find to be quite useful, get your mum to run it and (the gods willing) you will be able to access her desktop via it, without the need for extra software. I use it to fix my dads computer often.
TeamViewer is great for support like that. It's pretty easy to get even non-technical people to start it up and then they just read you a simple code and you can connect.
mhp|12 years ago
jibsen|12 years ago
orf|12 years ago
drunkenfly|12 years ago
I guess that £29/year is a small price to pay for that kind of feature.
michaelmior|12 years ago
erikdared|12 years ago