My programmer is trying to persuade me to move to .net from PHP.

I have always disliked the idea because of the expenses.
But he's tryiong none the less. I've been using Movable-type on various websites for about a year and am concerned about switching to 
another platform. I have heard very good things about 
blogengine.net. Is there a way I can transfer all my wordpress posts into it?
Any kind of help would be greatly appreciated!