This might also help. Saves creating multiple workflows or nested ifs:
http://leontribe.blogspot.com.au/2012/03/using-or-condition-in-workflows.html
Leon Tribe
Want to hear me talk about all things CRM? Check out my blog
http://leontribe.blogspot.com/
or hear me tweet http://www.twitter.com/leontribe
Want to hear me talk about all things CRM? Check out my blog http://leontribe.blogspot.com/ or hear me tweet @leontribe