Compile error

I can compile all the files but dtsSDK and all the exporters. i keep getting this error when trying to compile dtsSDK:

tse\lib\dtssdk\DTSMesh.h(122) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(186) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(342) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(406) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(472) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(475) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(493) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(495) : warning C4996: 'stricmp' was declared deprecated
..\lib\dtsSDK\DTSShape.cpp(511) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(541) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(564) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(586) : warning C4244: '=' : conversion from 'int' to 'float', possible loss of data
..\lib\dtsSDK\DTSShape.cpp(587) : warning C4018: '<' : signed/unsigned mismatch
..\lib\dtsSDK\DTSShape.cpp(592) : error C2065: 'i' : undeclared identifier

any help or advice would be appreciated.

thanx.