I have now moved to ROS fuerte, since I need to integrate ROS with USARSim.I have created workspace as given in the ros website. I have created sandbox directory also; but don't know its usage.  
  My package dependency is given below:  

stdmsgs,roscpp,tf,geometrymsgs,navmsgs, actionlib,sensormsg,control_msgs When I type in the terminal root@ubuntu:~/fuerteworkspace/sandbox# **rospack find usarsiminf**

/root/fuerteworkspace/sandbox/usarsiminf

root@ubuntu:~/fuerteworkspace/sandbox# **rospack depends1 usarsiminf**

[rospack] Error: package/stack usarsim_inf depends on non-existent package tf Thus rosmake will also give me error. I have install tf package manually. **So, what modification is needed; so that "rosmake usarsim_inf" works properly? **