record video to hd

[Hellfighter]

hi i need a bet of brain power here

i can record 720x480

normal screen is like
640x480
800x600
1024x768

but what gose with 720x480

if i go sample 640x480 it flicker when recording but i go 720x480 its all clear

basic i asking what is the line up above (below ???x???) 720x480> next in line?

???x???
720x480
????x????

i can edite it so it larger as will.

i really got to get a Tv-card PCI that can handle 1024x768 and above to do any good recording.