I've put together a collection of poker spreadsheets that are already in the public domain. If you need:
* A starting hands chart for no limit/limit
* Help with ranking hands
* An end game calculator
* Help with Sit and Go strategy
* Ideas for Heads-Up strategy
* A way of tracking your poker results
Then there may be a poker spreadsheet that can help you. See:
http://www.pokerspreadsheets.com/
Everything on the site is free to download.