RFC C++ Problems error LNK2019

Hello Everyone,

i was starting to develope an RFC Client but before the very start i have a problem.

Im using Visual Stduio C++ 2010 Express

I have the latest RFC SDK

I copied the bin/include/lib Folders to the Project.

Linkes the .lib files and the librariy Folder to the Project.

All the .h files are includes to the Project.

When im starting to compile with just this source:

RFC_HANDLE rfc;

RFC_ERROR_INFO_EX errInfo;

rfc = RfcOpenEx(cU("ashost=s sysnr=00 client=100 user=chicken passwd=pass lang=DE PCS=2"),&errInfo);

Im getting this Message

1>  RFC_main.cpp

1>RFC_main.obj : error LNK2019: unresolved external symbol "_RfcOpenEx@8" referenced in function "_nlsui_main".

1>C:\Users\sog_winterj\Documents\Visual Studio 2010\Projects\RFC_SPPHONE\Debug\RFC_SPPHONE.exe : fatal error LNK1120: 1 not solved external references

Does anyone has an Idea what i could do here?

thanks in Advance

Andre