Well it didn't error! But its not giving me what I want. That Calculated column is being titled "EXPR1" and its giving me nothing but zeros. Getting closer! 
Code:
SELECT dbo_FCLIT.EntityID AS ['File#'], dbo_FCLIT.GroupNumNum AS ['Numer of Actions'], dbo_FCLIT.ActionType AS ['Action Type'], dbo_FCLIT.StartAction AS ['Action StartDate'], dbo_FCLIT.End, dbo_Entities.Party3IDText AS ['Client ID'], 'Client Name'=IIf(dbo_Entities.Party3IDText='245204','SN SERVICING CORPORATION',IIf(dbo_Entities.Party3IDText='327599','STATEBRIDGE','Not Found')) AS Expr1FROM dbo_FCLIT LEFT JOIN dbo_Entities ON dbo_FCLIT.EntityNum = dbo_Entities.EntityNum
WHERE (((dbo_FCLIT.ActionType)='Answer Affir Defense') AND ((dbo_Entities.Party3IDText)='245204' Or (dbo_Entities.Party3IDText)='327599'));