Hello - - I'm trying to wrap my head around this one...maybe it's Friday....!

Anyway, I have a list of employees: Name, Supervisor and Service Date. I'm trying to add a column that would show the Years of Service for a future date range. The future date range would be Quarter 3 - 2009....I'm looking for those that would have a 5 year anniversary, 10 year, 15, 20...and so on...that would fall between July 2009 and Sep 2009...

Any ideas, suggestions would be great! Thanks...and enjoy your weekend!