[OT] MtG Computer Game Help

[DungeonKeeperUK]

Nor sure if anyone can help here, but recently decided to stick MtG back on my PC, but can't seem to play the Duels, only the fill "Quest" Game...

Can anyone help me out here????
I went throgh and comlpeted the gaem in case it was feature unlocked when completed, but nothing, lost the manual in teh coule of years since I last played, so not sure what to do..

Cheers in advance
Andrew