It is a multi-layer board and the solder pad is very small so be careful.
Getting enough of the old solder out of the hole so as to make the installation of a new wire is a pain.
I suggest shoving a piece of resistor lead through and soldering that in place. Then solder the new antenna wire to that. That way if you damage the antenna wire again the repair is easier. I also suggest making a knot in the wire on the inside of the case for strain relief. I have not tried this and wonder what the effect might be @ 2.4 GHz. So suffice to say do a range-check once you are done!!!!
P.S. aussies1129, you posted this same question in 3 different forums on this site........a bit excessive don't you think?