preparing designs for print

i need to get a design i made ready to print on t shirts. i usually use illustraitor so i can just group every thing that needs to be grouped. and it is in vector. so making it a certain size dosent really matter. how should i go about setting up a logo for print im photoshop.

set up your document res to 300dpi and cmyk

T-shirts are different ( I dont think they use 300 dpi. I thinks its more like 100, if I can remember.) . I would contact the place where you are printing them and see what the specs are.

i called him. he said to make it 300dpi. than convert it to tiff.