After some extensive trial and error, I have found that iTunes7.5 thru 7.7 seem to install best on my PC, however I'm still prevented from downloading music.
There appears to be two issues.
1/ itunes says there is an unknown error (5002) which is a problem with the itunes store, please try again later. Trying again later yields the same result.
2/ The store front page doesn't show at all.
Any help to resolve these issues would be very much appreciated!