Create Plugin For Mapquest on Wordpress Blog

Hi, I have a client who would like to have mapquest directions for his business on his site.? He'd like his address? to automatically show in the 'to' field and the user would type their name into the 'from' field.? Then they click a link and they are brought to the? mapquest site (opening in a new window). I don't even know if this is possible but if it is, or if there is something similar you think you could create, I'd love to hear from you. Please? let me know if I need to clarify anything or if you have any other questions. This would be going? on a wordpress blog? in one of the columns on the right. Thank you for your time.