If anyone is looking for some VLSM practice exercises, please proceed here -->
http://www1.fccj.cc.fl.us/cschmidt/cisco_5_exercises.htm
The site attempts to step you through VLSM using the binary method (yawn), but you can apply whatever method you feel comfortable with and then compare your answers with theirs.
If you need further assistance understanding subnetting, or if you are reading the Subnetting section of the 70-291 Self-Paced Book by Microsoft, then do a google search for these two excellent documents.
1) Sybex IP Subnetting Sample Chapter
2) Cisco Press VLSM Sample Chapter 2
http://www.ciscopress.com/content/images/1587201585/samplechapter/1587201585content.pdf
I can probably subnet anything now
Cheers!
JL
