If you copy and paste the spec sheet from the thread here: viewtopic.php?f=6&t=80
and list all the components against each title then you will have a lot more chance of selling and will have provided the kind of info people are looking for. Describe the condition of everything, in particular whether the seatpost moves freely, any rough bearing and anything that is general not working as it should. With all that info you should be able to get away with just one or two initial photos but like Tim says, they really need to be a lot bigger.
I use imageshack to upload and resize my photo's, it works pretty well and is fairly idiot proof