The first part of that is fairly straightforward. Use your favorite editor (VIM all the way... down with EMacs!) to edit ./source/common/Item.cpp, and change line 271 to public instead of protected. (I haven't found any problems with doing it this way, if it's going to mess things up, the devs are sure to let me know)
As for the Network.cpp problems, the stem from an incorrect declaration statement. Again, use your favorite VIM on ./source/common/EQNetwork.cpp, and change the first part of line 80 to be "a" instead of "x"
Code:
type HI_LOSWAPlong (type a) ...
Hope it helps.