Is it possible? And how big a MicroSD card would you need?

It is possibe! and for instance I put 300 on and when it was all said and done it took up 374 megs. I alos have office space and it takes up about 275 megs

Do you have to convert it or will the regular format of the movie work ok?

you need DVD decrypter and then you use BB Video and that will convert the 1-4 gig video into the proper AVI format!

I suggest the 4Gb microSD cards, especially if you are going to add movies. As stated above they use around 300 mb's of space each.

There is a sticky in the Media Forum for the best deals on SD cards. good luck.

Thanks alot guys. Will try it out soon...Have a long trip coming up and it will come in handy.

Make sure you grab a chager and extra battery in that case.