Chari wrote:yes, i did use movie maker 2 cause i can't use premiere or vegas very well

No no, that's not the question.
The "Studio" form is for your production group or studio name, not the software you used.
A production group is no more than a bunch of people who make AMVs together under a common name (e.g. Random Variable Productions, More Than Toast, Destination Skyline, etc.). There are also plenty of one-person "studios" (e.g. Kusoyaro Productions, Ninja <s>Garden</s> Gaijin Studios, NHMK, Doki Doki Productions, etc.), which sometimes become multi-person groups later on (e.g. Aquiline Studios (sorry, I had to say it) and I think Nightowl Pictures).
Don't have one? That's fine -- just leave the form blank.
Or make one up... that's how all those groups came to be.
Anyway, this isn't that uncommon of an error for newbies to make, so don't feel too bad about it.