Not switched on by any means, but my solution was to dump vista.

spence - thinking about dumping Vista as it's been nothing but a bl00dy pain since the day we got the laptop. Wouldn't know how to do it though so it will cost me a pretty penny I'm sure - just got an iPhone and can't get it fired up with iTunes.

Install as administrator maybe (right click and run as administrator I think)?

Vista is a bit crap though (although personally I had no problems) - Windows 7 is a much better OS! Very easy to install as well - just back up what you need, put the W7 disk in and reboot the computer. Should hopefully boot to the disk from there and you just follow the instructions 🙂

I think you may be able to use iPhones with Winamp. You definitely can use iPods with it but not sure what other features iPhones use iTunes for?

get a mac, problem solved 😉

Make sure its the right version as vista version of iTunes has 32 and 64 bit.

Go through the basic first, surprising what daft stuff will mess you over
http://support.apple.com/kb/ht1926
More advanced, though I couldn't find anything mentioning error 2:
http://www.techsupportforum.com/microsoft-support/windows-vista-windows-7-support/215494-itunes-does-not-start-up.html

Vista does seem very prone to daft issues, again even going by the thread title my first thoughts were upgrade to 7. It can be done pretty cheap if you know anyone in full time education through the software for students scheme