Need help finding a simple 'shortest path' algorithm

Hi,
I've been looking around the internet for a while now trying to find some source code for a 'shortest path' algorithm. I've come across a couple now, but the ones I've found haven't been very easy to follow and haven't had any comments. I was wondering if anyone knew of any sites that generally have well commented, easy to understand (and free to use) algorithms?
Thanks!

Djikstra's Algorithm

Bellman-Ford

Quote:

---

but the ones I've found haven't been very easy to follow and haven't had any comments.

---

Write one. As long as you understand how the algorithm works, you shouldn't need code unless you're planning to cheat on homework. ;) If you don't know how the algorithm works, how can you be confident that any code you find is correct?