Yup - 300 is the magic number: specially if you are from SPARTA!!!!!
Seriously, your printer will MOST likely want it in CMYK, though more and more printers are taking RGB files now (sRGB and the more robust Adobe RGB)... but you gotta talk to your potential printers about that.
I really recommend you keep everything RGB until the last minute (photoshop tends to give you more options in the RGB realm than the CMYK) and then convert to whatever the printer wants at the time of printing. I would also make a practice of keeping the RGB files as-is and creating a COPY to convert to CMYK.
*-END OF SERIOUSNESS-*
LOOKOUT FOR THAT NORWEGIAN, he has a GOOSE!!!
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THIS SITE REALLY DOESN'T EXIST
the way our EGO THINKS IT MIGHT!
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