Background Help?


I want to make a new background but every time i save it then upload it always comes out blurred i wonder if there is a certain way to save it. I use Photoshop CS5 and i have tried saving as JPEG and PNG. Please help me.
Ok, well, at least you have tried saving as png, as jpeg is not reccommended if you want decent quality, could you maybe upload a screenshot of your work in photoshop and then a screenshot of the blurred version?