Is there any way to find out how many hits you receive from bots, on an IIS6 site? [closed]

Is there any way to figure out how many bots (even if it's just one type of bot) that hits our site, on a daily, weekly and monthly average?

we have the standard IIS6 web site logs in lots of files.

Any tricks or recommendations?

Update

Program needs to be .NET based. No php or extra ugly packages, please. Free would be a bonus.

Here is a pretty good list of known bot user-agents. I am not familiar with any free web log analytic tools written in .NET, but you could easily parse the logs yourself if all you are looking for are bots.

http://www.user-agents.org

Google Analytics anyone? Free, Javascript based, so no need for server side languages. In depth coverage of hits, bots too.