You can locate the different account types by scrolling through the Market Watch pairs/instruments. If you can't see them/any, right-click on a pair/instrument and click "Show All".

EURUSD          $7 Commission          Standard ECN account: Majors pairs have a medium spread. 

EURUSD.pro   $8 Commission          Standard ECN account: Majors pairs have a smaller spread. 

EURUSD.var   $0 Commission          VAR pairs have no Commission and higher spreads. 

EURUSD.Mini $1 Commission          Smaller lot sizes (1 lot = 1000).

Different account types are only available for Forex and certain other symbols.