thanx i will try that - i am using sony vegas movie studio platinum9
a simple trick is to duplicate your footage and then reverse the second clip to play backwards,so then the beginning is the same as the end if you follow me.
another way is to cut the 1st third of your clip and put it on a layer above your second part then fade the top clip up from 0 opacity to 100.
it really does depend on your footage though.