getting error

Hi frnds can any one help me i am getting the following errors when i am debugging my selection program.Do i need to include any header file i had already included the some of the header files can any one help me from rectifying this error.

1>------ Build started: Project: selection, Configuration: Debug Win32 ------
1>Build started 7/19/2010 11:43:06 AM.
1>InitializeBuildStatus:
1> Touching “Debug\selection.unsuccessfulbuild”.
1>ClCompile:
1> All outputs are up-to-date.
1> selection.cpp
1>c:\users\karthik\documents\visual studio 2010\projects\selection\selection\selection.cpp(70): error C3861: ‘drawviewVolume’: identifier not found
1>c:\users\karthik\documents\visual studio 2010\projects\selection\selection\selection.cpp(73): error C2065: ‘BUFSIZE’ : undeclared identifier
1>c:\users\karthik\documents\visual studio 2010\projects\selection\selection\selection.cpp(75): error C2065: ‘BUFFERSIZE’ : undeclared identifier
1>c:\users\karthik\documents\visual studio 2010\projects\selection\selection\selection.cpp(89): error C3861: ‘processHits’: identifier not found
1>c:\users\karthik\documents\visual studio 2010\projects\selection\selection\selection.cpp(98): warning C4018: ‘<’ : signed/unsigned mismatch
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.46
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

While your program may use OpenGL, this is most definitely not an OpenGL issue.

Off-hand, it smells like a header file issue, but this is really something you should take to a C++ forum.