I'm going to be doing about a 2-3 week run through Sweden, Norway, Finland and Denmark, and am kind fo confused as to how the 5 or 10 day in 2 months pass works, does it mean that I can take the rail 5 or 10 days, any days as long as its within 2 months from teh day it was validated? Cause its cheaper than getting the 21 consecutive day pass. Thanks a bunch for any info!!!

The five or ten day pass is a "flexi pass" meaning the days don't have to be used consectively. So, you're correct that you can use those days any days during that two months. Sounds like a good deal to me!