I'm re-working a logo and was wondering about file types and such. I haven't found much on it, but it seems I should save as a .eps file in small, medium, and large versions, in both color and greyscale versions. Then I can convert one to jpg/gif or whatever depending on what it's for (Web, fax, etc...) Is there anything else I need to pay attention to? And what specific sizes should I save it as, how big and how small?