Unlike the first game, Elite Force II is largely set onboard the USS Enterprise-E stationed in the Alpha Quadrant. The game's storyline is a semi-sequel to the movie Star Trek Nemesis, and the end of Star Trek: Voyager series. Many of the members from the original Hazard Team reappear. However only a few of the primary cast of Star Trek: The Next Generation did voice acting for the game, among them Patrick Stewart as Jean-Luc Picard, Dwight Schultz as Reginald Barclay, and Tim Russ as Tuvok. Several actors from Star Trek series provided additional voice acting: Jeffrey Combs (Weyoun from Star Trek: Deep Space Nine and Commander Shran from Star Trek: Enterprise) as one of the main villains; Robert O'Reilly (Gowron from Deep Space Nine) as Krindo; J.G. Hertzler (Martok from Deep Space Nine, plus roles in Voyager and Enterprise) as Lurok; and Vaughn Armstrong (Admiral Forrest in Enterprise) who contributed with several character voices. (Taken from Wikipedia.org, for temporary use.)
For those on the Mac version. This patch has two major components. For single player, it adds the Jeri Ryan voice pack. This will update the original game to use dialogue for Seven of Nine performed by Jeri Ryan, who plays the character on the show. For multiplayer, this updates the Holomatch engine to version 1.2. This will allow players who do not install the Expansion Pack to compete against players with the Expansion Pack for Deathmatch, Team Deathmatch and Capture the Flag games. A number of new multiplayer skins are included as well, including Borgified Captain Janeway, Assimilation mode and Team Fortress mode that can be accessed via console.