A graphics card should be better than integrated graphics if they are both from the same period, but how better is another question.

Give us the graphics card stats. Is it really an Intel? I thought they gave up on graphics cards after their i740? in 1998! :p

Also, be aware of the AGP you have... they come in 3.3V and 1.5V versions. A newer PC with a P4 HT may not support 3.3V cards and a 64 MB graphics card sounds like it comes from an age that uses 3.3V AGP