At last i am able to make it work. Thanks to this blog post i am able to get some headway in the problem i was facing. Basically i was running a php script as a batch script and i was not able to make some commands work because they contained space(s) in the path. There is a switch to DIR command in DOS "/X" which tells you the short name for any directory or file name.
So instead of "C:\program files\foo\bar.exe" you can use "C:\PROGRA~1\foo\bar.exe". May be it is helpful to someone.
