When you make sprites does the image file type have to be .png or can it be .jpeg etc.??

cheers for helping me out

You can use both. The difference is the type of format. GIF is the best file type.
This might help

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.