Are there any tutorials for configuring Jenkins with the Force.com Migration Tool?
I don't know of one to link to for you. I'm not near Jenkins right now, but I think the following is basically accurate.
Follow the directions here to make sure that you have java, ant and the ant-salesforce.jar downloaded and installed or avaiable.
Install Jenkins (these instructions may be easier for you on Windows).
Get Jenkins running (different depending on how you installed). You may have already done this as part of step #2.
Create your Jenkins project and configure an Ant task.
Once you have your project set up you can run your job on demand until you get it to succeed and view the console output to verify that it is working. Then you can schedule it to run periodically such as every night at midnight or poll your source code repository.
Honestly, I put a lot of links in here that have detailed instructions, but it is not difficult to get Jenkins up and running and once you have it up and running the GUI is very intuitive and you can figure most of it out yourself. The directions here are pretty straightforward and you can even test drive it.
The Salesforce Using the Force.com Migration Tool doc has good samples of ant build files that cover different deployment scenarios.
We just got done building our CI infrastructure around the next release of the Nonprofit Starter Pack at the Salesforce.com Foundation. We open sourced all the documentation including the Jenkins configurations and scripts used as well as a custom webapp (mrbelvedere) we deploy on Heroku and use for some custom logic not possible directly in Jenkins:
I did an hour long webinar a few weeks ago on the setup as well which was recorded: http://www.youtube.com/watch?v=Cm42ZF5MrLA
Check out the Amazon AMI I have associated with this github repo, it's preconfigured with ANT Migration tool, and Jenkins ready to go.
I can also answer any questions about the instructions there.