Vorbis dev - Apr 2005 - I can follow the programme step by step

hi:
   I have compiled the whole of encode program in windows xp. but when degugging
process,I can step into the lib called
for example,when i try to step into or over
"vorbis_info_init(&vi);", i was
told "please enter to path for vc60.pdb",  I do as that,but still
fail.
   
   please help me