Hi Diane, try going to the lexmark website and look for the download for your printer, click on download and then follow the instructions on your screen!
www.lexmark.com
Woody, January 2008
why don't you download the software from Lexmark?
http://drivers.softpedia.com/get/PRINTER/LEXMARK/LEXMARK-Printer-5700-Color-Jetprinter-Version-1031.shtml