Need capture card help quick!

I have an original xbox with no hdmi cable port.
I play with a monitor for a tv so im using a vga plug in.

I just got HD PVR2 gaming edition. I was wondering if anyone knows If I can use that with my current setup? or do I need an hdmi plug in for it?

I have a vga plugged into a vga splitter. one vga plug in goes to the monitor and the other goes into another adapter that switches the vga into a yellow red white and (a thicker coaxial/ something plugin that i dont know the name of) those plugs are all female so thats what the capture card would plug into.

VGA SVGA to S-Video AV 3 RCA TV Converter Cable S-Video is the cord i have to connect to the vga splitter