http://www.zwsoft.com/forum/viewthread.php?tid=1288 I want to know from you people if ZWCAD can work on Windows Xp Service Pack 3. I've tried it on my personal machine at home, but it doesn't want to license itself. The program seems to be working fine, I don't realy have any problems, but I don't know if it's compatible with Service Pack 3. Is there a patch I can get from some place that with bridge the gap between the program and Sp 3.... Help is needed urgently...... Cad4All 2009-04-24 14:43:52 http://www.zwsoft.com/forum/viewthread.php?tid=1288&pid=13841 For you: http://www.microsoft.com/download/en/details.aspx?id=10767 Link reference. Have fun. I think it will help you.good night. <a href="http://www.aihcp.org/ceu-program-spiritual-christian.htm" target="_blank">Christian counseling certification</a> <a href="http://www.sunwavesports.com/Swim-Jammer-s/9077.htm" target="_blank">Swim Jammer</a> mizzfail2011-10-04 23:46:15 mizzfail 2011-10-03 08:35:59 http://www.zwsoft.com/forum/viewthread.php?tid=1288&pid=11368 I am using Windows Xp Service Pack 3 too, but Chinese edition. And ZWCAD could work fine on it. Do you use a dongle for registration? zw_admin 2009-05-14 10:04:36