I am sick of continuously buying from MS

I have a licence for Visio 2003 and I want to be able to download it and use it.

I am unable to find a link to do this. Whenever I find a link it redirect me straight to Visio 2010 ++ What can I do

Two ways that I can think of, you can download it if you have a MSDN licence, or, you might be able to find a CD on ebay or similar. I've just had a look on ebay and there are many CDs there for the standard and pro versions at prices not worth arguing about.