Steps to Setup openERP Development environment in eclipse:
1)Install Eclipse
2)Open eclipse
3)Goto Help->Install new software->Add site
4)Enter pydev as name and http://pydev.org/updates as location
5)Install python 2.5
6)Goto Window->Preferences->Pydev->Interpreter
7)Click on new and Browse Python.exe
8)Create new pyDev project
10)Browse openERP Server source code for Project contents
11)Select 2.5 Grammar Version
12)Choose Interpreter Created in step 6.
13)Configure openerp-server.conf file
14)run openerp-sever.py in debug mode
OpenERP运行所需要的依赖库请参考：解决OpenERP依赖库问题