I have for Corel Paintshop Photo Pro3 but windows 8 is saying it is not compatible.
It isn't compatible with Windows 8.
Microsoft® Windows® 7, Windows Vista® or Windows® XP with latest service packs installed (32-bit or 64-bit editions)
1.5 GHz processor (2GHz or faster processor recommended)
1 GB RAM (2 GB or higher recommended)
1 GB of free hard drive space required (2 GB or greater recommended)
1024 x 768 16-bit display
Windows-compatible CD-ROM drive for installation
Internet connection required to post photos online and download program updates
In addition to the system requirements that ksiemb has posted, you can always check the Windows Compatibilty Center to see if others have been able to get a specific program to work on Windows 7 or Windows 8. For Corel PaintShop Photo Pro X3 on Windows 8, there are 3 different listings with a total of 21 votes, and 20 of those votes are users stating that it is not compatible.