I've created this tool to give administrators the ability to
- Delete timerjobs (like the OneTime scheduled timerjobs that are created by the ContentDeployment API but fail and never get cleaned up)
- Disable timerjobs
- Run timerjobs NOW
- Edit the schedule of timerjobs

Check out my blogpost on the matter at http://community.zevenseas.com/Blogs/Robin/archive/2009/07/24/want-to-configure-timer-jobs.aspx
And/or if you are interested in other stuff that we have published check out the following codeplex sites