I'm having a lot of trouble with the 5th Terran mission, Revolution. When I bought the game I got the Battle Chest so I have a strategy guide, but the guide suggest I get a bunch of wraith's, the problem with that is the only way to do this is destroy and rebuild a refinery currently in control of the confederacy. The guide suggests capturing the refinery after making the wraiths and giving them the upgrades purchase able from the spaceports add on(control tower I believe). I cannot make any wraith's after purchasing the upgrades they suggest and purchasing the upgrades is pointless because I need a dropship to transport scv's to the island containing the refinery after I capture it. Is there a Vespene Gas area I'm not finding that I should build my own refinery on or is the guide suggesting I use cheats? I really need some help.
tl;dr : I need help with the 5th Terran Mission: Revolution.