1 - How do you load a JPEG file and convert it to a non-compressed bitmap?
2 - How do you put a non-compressed, in-memory bitmap to a DD surface?
1: Check on sites like www.wotsit.org for information about the JPEG file format and converting files from the encoded format to a non-encoded mode.
2: Move information, once uncompressed, just as you would any other graphic format, such as BMP, which can be found in just about any tutorial on starting with DD.
-Geoff