What you could consider doing is looking for a program that converts a raster based image to a vector based image.
This is a site that does it http://vectormagic.com/home
but there may be others for free.
Once you convert it to a vector based file, you can scale it up or down without losing image quality.
With a raster based file, such as (bmp, gif, jpg) when you scale it up, it gets blurry.
Does that help?