how to use NetworkManager in ubuntu 10.04

[金 晓烨 <jinxiaoye1987 gmail com>]

I want to develop an application run in ubuntu 10.04 and this application may have some IPC with the NetworkManager.
When i installed the NetworkManager 0.9.20 after "./configure" "make check" "make install" "make installcheck" it is all clear ,but then i can not get my eth device information with"ifconfig" and get into the Internet.
I use "ps -aux"can find that the nm-applet is running, but there must have some mistakes for me, when i use the tool provided in  "use/local/bin/"like nmcli the terminal`s output is that "./nmcli: error while loading shared libraries: libnm-util.so.2: cannot open shared object file :No such file or directory"
Is that device`s driver problem? how can i fix it.

please help me how can i use NetworkManager in ubuntu 10.04 .

Thanks very much!