open the .fx file up in SED and look around line 74... in a section of code that looks like this...
Out.Tex=texcoord0.xy;
float3 PosWorld=mul(Pos,matWorld);
[u]float3 LightRange= 0.004;[/u]
simply do a text search for LightRange...
we are talking about the pix hsader 2.0 version of the ent bumpmapping code from the ultimate shader thread... aren't we...
--Mike