I am guessing that your new computer has windows vista on it. That may be the reason Printmaster 12 will not install. Certain programs or their installations are not compatible with Vista.
I'm not sure what errors you are getting, and I am assuming you are running Windows Vista, so again I'm just guessing.
You could try to launch the setup program manually and using compatibility mode by following these steps:
1. Insert your installation disk.
2. Click the start button
3. Click on Computer
4. Right click on the drive containing your installation CD
5. Select Explore from the menu.
6. Find the Setup or Install file in the list.
7 Right click on it.
8. Select Properties.
9 Select the Compatibility tab at the top.
10. check "Run this program in compatibility mode for"
11. In the drop down menu select windows xp
12. check "disable visual themes"
13. Check "run this program as administrator" (if it is available)
14 click OK
15 now double click on the setup/install program.
I hope this solves your problem.
Thanks!