I recently re installed windows 7 pro 64 bit (at the weekend) but didn't want the hassle of all the updates so I followed this guide here. think there is like 214 updates from a SP1 ISO file to download.
http://forums.mydigitallife.info/th...7-distribution?p=756785&viewfull=1#post756785
it tells you to download a file called UpdatePack7R2 version 15.2.17, this is updated every so often when new updates come out.
it tells you how to update the current ISO or DVD with all the updates and then you can either re create a ISO file or copy the extract iso to a USB stick which is what I did
after following that post I had 22 updates to download and saved a lot of time and hassle.