Possible Duplicate:
eps file vector quality issue
I have a large vector .eps file of 8 logo samples. At 100% zoom, it is crisp and gorgeous, about 4 inches wide and 1.5 inches high on my laptop screen. How do I export it at that size and save it in the same quality, but png format at the same size? I'm new to Illustrator and it is different from Photoshop function wise.