Hi outlaw,
Really sorry but no Motherboard CPU's are never worth upgrading. For the amount of effort required (if the CPU isn't hard soldered to the motherboard) it's not worth upgrading an aging CPU architecture.
For the price you would pay someone, or to pick up the parts and attempt to perform this yourself (3-4 hours at least.) you are much better off looking at upgrading your entire laptop.
Not to mention to be honest upgrading laptops like that mean you're usually bottlenecked by the other components like onboard graphics, slow/small amounts of RAM and slow hard disk drives.
As reccomended in another thread, if you want a value for money upgrade to give a laptop a speed and battery life boost you're actually best to invest in an SSD. This will instantly increase your battery life, make your laptop more move friendly (less moving parts) and also produce less heat and furthermore making your windows, and applications boot much much faster. It really is a real 'adrenaline shot in the arm' for old laptops.
An SSd upgrade can be performed quite easily by your local computer repair shop, alternatively you can look at performing it as there are kits available.