A really stupid question...

[HystericalParoxysm]

That's covered in the Creator Guidelines - http://www.modthesims2.com/fd.php?f=524

[marshmallowskate]

...one that's probably been answered in the most basic place that I'm just overlooking.

Anyway, I made a hairstyle I'd like to upload. How do I get my hairstyle into a .rar or .zip format?

[theonlyonetwo]

right click on desktop
click on new
winrar zip file

[simsample]

Thankyou theonlyonetwo- however HP's link is to a tutorial which is in depth with illustrations, even down to explaining where to download Winrar from. :) It explains what you just said with bells on.