empty results for most projects

Hi I just installed an compiled libwww.
 
Now when i try to run and execute the code on a windows machin using the
VC++ projects, i see that most of the projects fail at some point.
 
For example the (Chunk Files" example returns failure when it calls
chunk = HTLoadToChunk(absolute_url, request);
 
Chunk returns 0.
 
Similarly for other projects. it fails whenever i try pass a url as an
program argument.
 
Is there something i must set up in windows environment to take care of
this. I am behind a firewall do i register proxy and gateway settings
inthe examples to make them work.
 
thanks for your help raj