installing SL5.5 dvd iso into virtual pc

[umage]

Hi, I'm trying to install SL5.5 using the two dvd iso files into a 
virtual pc virtual machine by mounting them. Problem 1 is that it always 
goes for the console-based installer. Problem 2 is that after clicking 
through the initial questions and choosing the 'Local CDROM' option, I 
get "The Scientific Linux CD was not found in any of your CDROM 
drives.". It also ejects the mounted cd image.

I could not find any relevant documentation. Is anyone familiar with 
this kind of issue?