I'm uploading a .zip that I made by using the poclbm GPU miner. It includes the standard file, with all rights and credit to that files creator whose name escapes me right now. But I included a preconfigured bitcoin.conf file as well as batch files to start the bitcoin client in server mode and to start the poclbm client for solo mining. I added a readme file explaining how to do everything!
Feedback is appreciated http://rapidshare.com/files/454552832/poclbmsolo.zip
I'd suggest moving the "change your default username and password" sentence from the end to just after you discuss dragging and dropping bitcoin.conf - too easy for a lazy user to miss it, otherwise... :-)
What would be really cool would be a bit of auto-magic config so that a user can run a script, enter their username and password, and bitcoin.conf etc gets updated with the username/password they entered.
Beyond that, I'm not on Windows so can't really test further but it looks sound and anything to make life easier has to be good.