low free space on C drive of SBS box

After troubleshooting SBS boxes with low space on the C drive, I have found three good places to look for freeing up space.

1) Look in C:\WINDOWS\system32\LogFiles\W3SVC1 for unneeded/old log files
2) move the windows search index files. Go to the control panel and in the "indexing options" applet, click on advanced, and change the index location. After finishing, restart the search service. This saved me a full 1 GB on an SBS 2003 machine.

3) move the ISA tracing log files using this method - http://davehope.co.uk/Blog/move-isa-tracing-location/