Thankyou Peter Spier
I downloaded my student CS5 when I purchased it, so no disks - so when I uninstalled I just presumed i'd be able to access it again somewhere! Yes silly me!!
I had downloaded a trial of CS6, while trying to figure out CS5..I cannot find a link with the one you provided?
Anymore tips - such a duffa - costing me so much time
I really really really appreciate any help 