07-31-2008 10:51 AM
No, you need to upgrade to the latest version.
08-04-2008 03:46 AM
Why would you want to?
The .Net Framework version is the version that the application is compiled in. So no "Service Pack" is likely to change the framework for an application.
ACT! 2005 and 2006 were written for .Net 1.1
ACT! 2007 and 2008 were written for .Net 2.0