Image Upload Questions

[whitlecj]

Hey. I am very new to vbulletin and was wondering if there is a mod that will automatically downsize the file size of an image to be uploaded by a user. What I mean is, if a user wants to post a picture in a forum thread, is there a mod that will allow them select the full size picture off of their harddrive and the mod will automatically reduce the file size of the picture to one that is allowed by vbulletin.

I also plan on have member photo galleries. Is there an all in one solution of gallery and upload downsizing?

Is this how most sites do this with vbulletin or is it better to have the images hosted on imageshack or something else.

Sorry for all of the questions, just trying to sort through this picture thing. Thanks for any help you can give.