Photoshop CS4 256 colours

Hey everyone.
Just trying to get it so I can only use the colours found in the old 256 colours colour mode found on old computers (windows 95/98 etc) in adobe photoshop cs4.
Need it so I can make some old-school game sprites which are reeeeeal pixelly.
Thanks.
Answer #1
You need to change the image mode from RGB to INDEXED COLOR