Hy Pholx, I’m using a Gefen KVM to switch betwixt two PCs each with a Desktop resolution of 2560 x 1600, to a Dell 3007WFP which has only one DVI input, so w-h-a-t contraption can help switch between both of the PCs A-N-D a Blu-ray player and also maybe a Game Console??

Technically stumped at the moment,
Myke

There aren’t going to be any simple inexpensive solutions.  Unless you just get a different display for the blu-ray and game console.  That is probably both the simplest and least expensive.
Otherwise you’ll have to deal with converters and switches and hope that the blu-ray will display properly since the Dell monitor doesn’t do HDCP.

Install a blu-ray drive in one or both of your PCs.

Find a Y-cord for DVI for your game systems.

Check your monitor for a HDMI port for the game system.

A BluRay drive in a PC will still likely have HDCP issues over DVI, best thing to do is update your gear to all HDMI (as much as I hate to have to recommend HDMI!). Video cards with HDMI out can be picked up for $40-50 that are HDCP compliant, then you just need to worry about your monitor having an HDMI input. A $100 will get you a usable HDMI switcher to switch between any 4 HDMI sources.

You can use a DVDO Duo. It’s what I use for multiple HDMI into one input. It also has two HDMI outs for multiple displays or separate audio and video over HDMI.

http://www.simplaylabs.com/DVDO/DVDO_iScanDuo.aspx

You can also try HDMI Matrix switch by Atlona. It has 4 HDMI inputs and 2 HDMI outputs.  AT-HD4-V42