See, that really depends exactly what the vendor wants...

If he just wants your PDF and Jpeg files in a Coreldraw format, then you need the Corel Draw graphics suite:

http://www.corel.com/servlet/Satelli...=1200587422507


In that you probably get 20 different applications, but all you need is the DRAW program. Open your file, then save as the default Corel file format.