bed is not centered and is offset and Steps/mm are all over the place

Hey all, it's my first time using ramps 1.4 or even marlin for that matter. I just upgraded from an ANet A8 after my board crapped out and after the nightmare that was setup without this forum as a resource, I've got a problem with my bed not quite being registered correctly and my steps/mm on my z axis are crazy off. I am quite tired now and about to sleep so here is an imgur link explaining the problem from earlier when I was more lucid.

Thanks to everyone in advance

This has nothing to do with centering...

That site is terrible, you click on image to get a closer view and it shows you a smaller image!

Connect up some control software eg pronterface.
Send the machine a M503 (display settings)
Note the M92 line in the M503 report. this is your currently configured steps
adjust steps with M92 X{new X steps} Y{new Y steps} Z{new Z steps}
and save with M500

Thanks I was able to set it up but for the life of me I can't figure out what to set it to and I've been googling for 3 hours and trying different stuff, I have stock Anet A8 steppers, a mk8 extruder and a 220 x 220 bed, I was able to manually measure the offset so it homes to x-25 and y-10 but the other things are pretty hard to find for me

(Expected move distance/actual moved distance)*current steps/mm=new steps/mm

Hook up your printer to a computer, tell it to move 100mm, measure the exact distance it moved and calculate with the above formula

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http://www.marinusdebeer.nl/

Make sure you have the 3 jumpers installed under the driver modules to set the micro stepping