So I got this illustrator file...

I made it a 250 by 250 file.
1) How do I increase the dimensions of this file? (since its a vector)

2) How do I save this in a way that people can see? Like a JPEG except the size is all funked up (its 250 by 250) but I want it to be of bigger dimensions.

Thanks! I'm a Adobe Illustrator beginner!

You can do it in Paint and Outlook. But if you find other metod to increase dimensions, pls tell me in pm.