Well most things you change in Attrib>ebps and sbps. Pick your race you want to modify then find the squad/unit, in your case the commander. Now you'll notice some say sp at the end of their names. Thats for the campaign mode, such as your honor guard and your leet commander.
Heres a real simple way to have him in skirmish: Rename the regular commander to have sp in the name and the leet commander to not have sp in his name.
Say for tau: tau_commander.rgd + tau_commander_advance_sp.rgd
Swap those names in both ebps and sbps.
I was wondering if u could give me the whole step by step process of how u make a leader (like a Farseer) to be in complete wargear like he would b in the campaign mode....So could u tell me how like from where to i go to in windows explorer to wat i type when i get there it would b much apreciated thank u