However, go to www.gamefaqs.com and there should be walkthroughs aplenty. Can you specify what exactly you are stuck on? A section of the game isn't very specific.
Generally speaking in FF games if you are getting clobbered the solution is to go back and slaughter random monsters to level up and get stuff. However IIRC part of the com tower stuff is timed, so you might need to revert to a previous save and do that before you go on the mission.
To beat the metalhead quickly, stock up on thunder spells and make sure one of your party has a good rapport with the thunder GF (I call him HHH or Zeus depending on my mood). You should be able to beat him back to the dock in under 10 minutes.