In reply to Gav Parker:
Boots plus some other points:
Footwear: I sumitted in December '96, wearing Scarpa Vegas (with one thin/one thick pair of good socks and yeti gaiters). This was fine, note it was pretty dry with not much snow about. Important point is not to get/wear them too tight as if you're going via the normal route the climbing isn't technical and circulation is probably more important.
Acclimatisation: Reinforcing a point above, if at all possible spend some time at altitude beforehand. It's very dependent on the person, but people that struggled on our trip were the ones who arrived in South America, went straight in to Base Camp and on up. I'd had a few weeks in Peru/Bolivia beforehand and didn't have any problems.
Turn-around time: The summit day can be a long day. Set yourself a realistic turnaround time and stick to it. If you're not at the top by that time turnaround and head back.
We spent the night before our summit day looking for a party who hadn't done this, the result being 4 of them spent the night on the hill without tents leading to nasty frostbite, hospitalisation etc.
Technical Challenge: The normal route isn't particularly a technical climbing challenge (note it is a big mountain and shouldn't be underestimated). However, if you think you want technical climbing challenge you might want to think about something lower and harder. Worth a thought.