you should really consult with your accountant or tax guy before pursuing a tax id # especially if you don't have employees. you can get shirts and stuff wholesale without a number. worst case, use your social sec. or you can get a dba certificate from your city and that'll be enough to purchase shirts wholesale if you're a sole proprietor. and some wholesalers only need to see a business card or letterhead.
What do accountants do for you? Do they cost a lot? What do I look for in one? I mean someone that specializes in small business or what?
I remember being at H&R Bloack and the person doing my taxes offered to do my "business from home" taxes for me outside of her regular job (which is a no-no for the company) as a personal accountant. Would she have to specialize in a certain field?