I do use Calibre, so yes it will be easy to convert them all at once.
I couldn't stand it anymore, I ordered a Kindle PW this morning.

I did get the one with ads after all. I talked to a friend who has one, and she said the ads didn't seem like a big deal to her. I thought about the 3G, but reading on the site it seemed like you could only use this to shop the kindle store, so I decided it wasn't worth it. There are free hotspots almost everywhere these days, and I am never without several unread books anyway.
So my cover will be here in 2 days, and my Kindle will be here Monday. That's pretty messed up. I guess I can sit and stare at my pretty purple cover for 4 days while I'm waiting.
I went to office depot this morning to see one in person. They had the gen 1 though so i couldn't see all the features and obviously didn't buy, but I did get to check it out a bit. You should have seen me in there with my jacket over my head trying to test the screen brightness. It was a sight, I'm sure. After really checking the details out last night I am excited about some of the newest features, like time to read and page flip.
This is the first time I have looked forward to Monday in a long time! LOL