Midi inserts - PT10 for Nord Electro 3

Hi



I"m brand new forum member to the forum but I've been searching and reading the forum for a few weeks now. I have a Nord Electro 3 and a M-Audio Midiman controller unit. I am able to use the Nord/Midiman to use the Pro Tools midi sounds (Xpand...) but the Nord samples I downloaded to my computer don't appear in the Instrument insert



How do I get the Nord sample downloads to appear in the Insert>Instrument list?



I'm sure this extremely basic but I've been banging my head against a wall.



Thank you very much!

Patrick