Paint Shop Pro Versions 1.0 through 4.12 were distributed as freeware, and can be legally downloaded and used for an unlimited amount of time without making a purchase. Version 4.12 is quite popular (January 10, 1997, Windows 95/98/2000/XP/Vista) this version is a 30-day trial, but continues to work after that; 4.12 was the last version that did this.
Get it legally here:
http://www.pagetutor.com/downloads/psp412.htmlI just installed it on my XP laptop & set the system date forward to 2 March 2015; it loads and the trial period message says "You are on day 90 of your 30 day trial" but you click OK and it works fine.