unresolved external symbol errors when I try to build

[ITawTaw]

Speedhack.obj : error LNK2001: unresolved external symbol _DetourTransactionCommit@0
Speedhack.obj : error LNK2001: unresolved external symbol _DetourUpdateThread@4
Speedhack.obj : error LNK2001: unresolved external symbol _DetourDetach@8
Speedhack.obj : error LNK2001: unresolved external symbol _DetourTransactionBegin@0
Speedhack.obj : error LNK2001: unresolved external symbol _DetourAttach@8

pls help

[ITawTaw]

well I fixed those errors but now the speedhack part doesn't do anything and idk what to do :/