Upconverting Dvd Player Grainy Will A Toshiba HD-A2 DVD Player Work Well With A 42 Inch Samsung HPT4264?

Will a Toshiba HD-A2 DVD player work well with a 42 inch Samsung HPT4264? - upconverting dvd player grainy

A Toshiba HD-A2 DVD player and a 42-inch Samsung HPT4264 plasma?

I use the Samsung 1080P7 DVD Player Upconvert now with Monster Cable Home DMI DVD's, but still grainy.

Is this a Samsung DVD upconversion realistic best thing I ever made this TV, or upgrade to HD-A2 make a noticeable difference?

Thx