Solved: Connecting2 computers, 2 monitors, 1 keyboard, 1 mouse

Hi, thanks for looking!!

Is it possible to connect the below "pieces" to make it easy for me to work, play & browse without spending in excess of $300+ for a single kvm switch?
I currently have:
A Dell Inspiron Desktop, win8, multi port video card
B HP workhorse desktop, win8 single vga video card (have new multi port vid card on order)
C, D 2 Acer 23" multi port monitors
SYBA SY-KVM31034 2-port USB/HDMI Compact KVM Switch
1 keyboard & 1 mouse

Here's my issue. I am way over thinking this or not comprehending how all this stuff works.

I thought it would be easy to make A go to C & D, B go to C & D and have some simple switch to hook up keyboard/mouse to both A & B.

However, when I research what, who, where I feel like I'm trying to re-create the NASA control room.

Is there someone that can spell out what I need? Pretend you're talking to a 5 year old with as much money as a 5 year old has in her pocket!

Thanks in advance for all comments and suggestions!

Lynn=)