If you want to use your existing ZAPGRAB in windows 7, there are some tricky solution for that. Choose “Adjust for Best Performance” option in “Advance setting” of My Computer – Properties. Now window 7 theme changed to XP theme. Now you can use ZAPGRAB.
After upgrading my laptop from Win XP to Win 7, I was unable to use ZAPGRAB as there is a compatibility issue with Win 7. For working in Win 7 you need to download the LICENSED version of ZAPGRAB. I have found many free screen captures programs on internet that can fulfill my requirements as ZAPGRAB do but didn’t find any good one.
After a lot of searching I have found “Greenshot” which is better than others & can also use in WIN 7. It’s an open source program.
Here is an download link of Greenshot official site http://getgreenshot.org/downloads/