Datacolor User to User Support Group.

I can't figure out how to use the extended gray measurements.
I made a 225 color target; printed; measured; created profile.

Now I'd like to print B&W so I went and printed and measured the
extended grays target and measured it. But I can make it into a
profile or figure how to add it to (extend) my existing profile. The
program says "You cant build a profile directly from an "extended
grays" target. Please select a color target and try again"  

Do I have to start over? If I chose a colored target I print that's
not grays?

What am I missing?

All in all a pretty cool Christmas present so far  :-)