Format to take to shop for printing

Hey...I have a bunch of photos I want to take to a photo printing shop somewhere and print. I have them as RAW files in Digital Photo Professional...I guess I put the shots I want onto a cd...but in what format? Jpeg? Tiff? As Raw?

Also, how would I go about letting the shop know how big to print specific shots? Because some I would like larger...some smaller...but I am not sure of the dimensions used...maybe there are a set of stock dimensions...?

thanks

Q10 sRgb jpeg. FAQ.

Some stores give you a console to give them the prints and info. Some have you set it up in the image (ie a specific ppi and numbers of pixels).

Thanks a lot

Make sure you fully read that FAQ -- it addresses a number of issues you will want to tackle! Pay attention to the section on "Proportions" (aspect ratios)!