Help please !

I have a monitor and tower PC and the cable that came with the monitor doesn't fit the PC. I've taken pics of the BACK of the PC and the Monitor. I don't know anything about cables. Would really APPRECIATE your help.

[attachment deleted by admin to conserve space]Looks like you need a DVI cable. ( OR DVI to VGA Adapter )

You probably have the smaller VGA cable to this monitor. With a DVI and VGA converter you could use the already existing VGA cable. This adapter plugs into the DVI port on the video card.Thanks. The pics are a bit rubbish but what looks like DVi on the Tower PC is a 59 pin DMS? (Not sure what this is but I googled 59 pin).
So when you say I need a DVI cable, are you saying the dvi connector would fit into the monitor (24 pin) and then VGA connector to the PC? DMS-59 is a special type of port that can SUPPORT up to two monitors on each port, it can do either DVI or VGA.  What you need is an adapter to convert the DMS-59 port to the DVI port on the monitor (DVI is better than VGA).  Something like this would do: http://www.amazon.com/Molex-DMS-59-8-Inch-DVI-I-Adapter/dp/B000BFGXOQ/ref=sr_1_3?ie=UTF8&qid=1408651894&sr=8-3&keywords=dms-59+to+dvi.  That will then provide two DVI ports so that you can connect your monitor (You will also need a DVI to DVI cable if you don't have one already).thank you for your help. that makes sense to me. Glad you got it all figured out. Thanks Cameron for help with this one. When looking at the pics it looked like a Dual-DVI video card, and i figured that it was probably the lack of a VGA port as I have seen before with SYSTEMS.