The can not load client.dll error is usually caused by missing cg.dll and cgGL.dll files. Note that they should be in the Half-Life folder (ie c:\Half-Life\ and NOT c:\Half-Life\spirit)yes, you need the latest version of these dll's, else it'll give that error, the latest are the ones in the half life that's packed with steam, i can the latest dlls for you, but it'd take a while.
It's not the light sources, gotta be a cubemap problem.you are correct, this "glowing models" glitch usually only happens when you havn't built cubemaps, or built them correctly, anyway, good to hear you got it working.
As is trying to get perfect aim in FPShonestly, who the fuck trys to get perfect aim in cs? (i'm using cs because you posted it as a comment on moo's journal or whatever)
I changed from avg to avast only because I heard it's better . zoyks ! Avast found trojans and viruses avg never thought about them.beleive me when i say this, Avast is waaaaaaaaaaaaaaaaaaay too sensitive, gives off too many false alarms.