How to start a program in a application ?

[Jason.han]

Hi all,
     I want to start a program in my application ,(e.g task A--->start 
task B)
     I can't get enough information  in  latest  source version ,
     so I wonder if some know whether there is some system call like 
fork()  or APIs to do this.
     Please give me some suggestion ,and  example it  preferred .
---------------------------------------------------------------------------------------------------
Confidentiality Notice: The information contained in this e-mail and any accompanying attachment(s) 
is intended only for the use of the intended recipient and may be confidential and/or privileged of 
Neusoft Corporation, its subsidiaries and/or its affiliates. If any reader of this communication is 
not the intended recipient, unauthorized use, forwarding, printing,  storing, disclosure or copying 
is strictly prohibited, and may be unlawful.If you have received this communication in error,please 
immediately notify the sender by return e-mail, and delete the original message and all copies from 
your system. Thank you. 
---------------------------------------------------------------------------------------------------