ATC assigned headings and altitudes take precedence over the DP,
however the controller may later assign a heading or a fix to join the DP.
Keep in mind that this does not relieve you from other requirements on the DP,
in particular the 250 KT restriction in the center of the page. Pilots get caught on this one daily as they either select speed FMS, or accelerate past 250 out of 10,000 FT.
An easy fix for this is to keep the speed on manual and 250 kts, also cover this restriction in your departure brief.