guild wars question?

so i just bought the guild wars trilogy, the all in one pagage deal. and i was just curious weather or not my games are linked and i can do all the campains with 1 character?

Yes, you can do all the campaigns with one character. However, with doing so, that character won't be doing the first few missions in the other campaigns. This is because your character is going to be leveled up and that the first few missions are basically tutorials.