If you've gone with Vista on your development machine, you may notice some issues with TSVN such as missing menu options and a lack of icon indicators. I used the last release and wasnt getting the experience I had grown used to in Windows Explorer.
I consulted the Well of All Knowledge (Google) and after some searching that not everyone was having the same experience I was. Some were, but those that werent seemed to be Windows users that had upgraded their Windows to Vista instead of using a fresh install as I did. After further research I found the recommendation for getting the very latest build (nightly build) of Tortoise to get proper integration with Explorer. The nightly build has an improved icon overlay. With this latest build/install I was able to get all of the context menu features that I have grown used to (it was a bit disheartening to right-click and only get 4 items to choose from, and no icons to let me know which ones where versioned).