Inspiron 17R N7110 DC Power Jack Issues...

How do I go about ordering a new DC power jack/power board for my Inspiron 17R N7110? Is it complicated to replace, and is worth the expense on a notebook that was 2 years old this past May? The battery and the power supply were just replaced, but the AC adapter no longer fits snugly into the power jack. I'm debating whether to order a new power jack and find someone to replace it or buy a new notebook. Suggestions? Thanks!