GSoC: Improving nightly tester

hi all,
As a part of GSoC 2008 project, I am improving the llvm nightly tester.
Now I am in the process of understanding the nightly tester source[1] together with its documentation[2](of course which I am planning to improve). I will ask any thing that need to clarify from the list.
Thanks!

-Rajika

[1] - http://llvm.org/viewvc/llvm-project/nightly-test-server/trunk/
[2] - http://llvm.org/docs/TestingGuide.html#nightly