Jack is loose where charger plugs in (by 2 users)

the jack that i plug my power cord into on my laptop(gateway 3522GZ) seems to be loose and i have to hold the cord or tape it in a certain position to get it to charge.trhis is bad for me because i believe my battery is loosing its power and i need the cord alot.i think at one point i trippped over the cord causing the first cord i owned to bend and the ceter part of jack is loose.i cant afford much as im on disability for now and was wondering if i can get the part and put it in myself or just live with taping it in place while i charge and use it.thanks in advance for any help as it will be greatfully appreciated.my email is

done4fun1@hotmail.com