IIS Performance settings

[saw15]

We are using Win2k server to run multiple production websites (3).

I would like to know if anyone has had experience using the performance tab settings, and do they really assist with performance issues etc:

The settings I am curious about:
1. Performance Tuning (number of expected hits per day)
2. Enable bandwidth throttling
3. Enable process throttling

If these settings are of value, can anyone point me to a site or provide some clarification on how to determine the proper settings for #'s 2 and 3?

Thanks in advance.