How to modify the default Check-in Action in TFS?

Yup, the check-in action can only be associated to a state transition (i.e. Active to Resolved). In my blog post that Fredrick linked to (http://www.woodwardweb.com/vsts/top_tfs_tip_3_r.html) I talk about how to remove that. You'll need to customize the work item for everyone in your team project to make this happen. For help on that see

http://msdn.microsoft.com/en-us/library/ms243849(VS.80).aspx

Martin Woodward blogged about how to remove the "Resolve" action from the check-in dialog as a work-around for this:

http://www.woodwardweb.com/vsts/top_tfs_tip_3_r.html