Okay so im looking to over clock my CPU and GPU. This is my first time doing this and I looked up guides but i couldnt seem to find any that really helped or were able to help me understand. I dont have the best CPU or GPU and this isnt a custom built PC but I was looking to get the most out of it for gaming before it dies as i have been looking around for custom built gaming pcs. Does ANYONE have any suggestions, like will it IMPROVE the speed AT ALL. Will overcloking it even do anything ? Even if it does help just a bit i would rather go ahead and over click it.

[attachment deleted by admin to conserve space]You will not benefit from clocking this old system. Like I said in chat a graphics upgrade is the only road for improving this computers gaming ability.I personally wouldn't - I have no problem with overclocking (and run an overclocked system myself) however you really need to use hardware that is designed to handle it. Prebuilt machines like your Dell really aren't built to handle overclocking, I would be surprised if your motherboard's BIOS even had the appropriate settings to CONFIGURE an overclock.
The CPU you have should be fine for most games... I would just focus on replacing that Geforce 310 with something better, possibly a GTX card such as a 260 or better. I have a GTX 780 Ti 3GB and I love it. I bought it used off my younger brother for $100. Your bottleneck is likely just this video card.