Well the good folks at Leadtek got back to me in no time. Here is their response...
"If you have a card with a Brooktree TV chipset, download TVTool, and if you
have a card with a Chrontel TV chipset, download TVCC2000. Both of these
utilities are available at the following website: http://www.tvtool.de/"
I'll let everyone know the results. Just in case anyone cares.
Well TVCC2000 is definitely capable of fixing the resizing problem but it seems to be very buggy.
When launched it works right out of the box immediately filling my TV screen. However, I cannot launch the program when I am in TV mode, I lose the signal to my TV. I have to have a monitor hooked up then launch the program. I then select TV and I am in business.
However, I do not have, nor do I want, a monitor hooked up to my home entertainment system. So this is a pretty serious bug for me.
BTW, you mentioned you used both programs. Each is meant for a different chipset. Do you have both chipsets?