What Compression tool?

[madotds]

Hi Peeps

Can someone tell me the best compression methood to use please? I have created a style and would like to upload it to the forums here but the max file size is 2mb. My uncompressed file size is 3mb but I can only get this down to 2.3mb with winzip or winrar!

I have downloaded zips from here before that were just under 2mb but when unzipped were over 6mb! how they do that? lol

Cheers for your help.