Mark,
I feel your pain!

When I purchased my computer a year or so ago, it qualified for a free Vista Premium upgrade. I got it, installed it and aside from the eye candy / tricks and the fact that I thought the Anna TTS voice was a nice improvement, I removed it and did a system recover BACK to XP.
I did not have to buy an XP CD since it was held internally in a separate partition.
This was done even after checking for compatibility of existing hardware and software. Yes, I lost several programs in the process but luckily I had backups on an external HD. I couldn't even log onto my computer using my fingerprint scanner but was told that the company would be happy to sell me a new driver for it! Imagine that!
As for Norton, it is quite simply, a bloated, suite of so called "protection" that allowed a nasty virus to get through which hosed my system some years ago. After some frustrating efforts to finally remove all traces of it from my new computer, I then settled on an Anti-virus suite called Bit-Defender which has been ranked as one of the top three on the market. They had a special 2 computers for 2 years for 1 very reasonable price. I've never looked back. They may even have a better deal for those interested. Kaspersky is another fine AV program suite.
Vista was broken when it was released. XP still works well for most purposes. As I mentioned before, if one likes or wants some of the graphical bells and whistles without going the Vista route, try
www.Desktop Sidebar.com,
http://www.stardock.com/products/windowblinds/,
http://www.winmatrix.com/, and many others.
I rebuilt my wife's old computer and installed Ubuntu and it absolutely SMOKES XP & VISTA in terms of speed, performance, graphics, functionality and cost! Ubuntu is absolutely FREE as is Open Office Suite and all the other apps regardless of type.
MS better watch out and they'd better hope Windows 7 is up to the challenge!
Here's wishing you better times, my friend!!