Missing SoapUI Project file.. in Testrunner.bat

Hi,

I am trying to run TestSuite using command line in Windows XP. When i try to run a TestSuite
in SoapUi Pro using Launch Testrunner (Launched by right clicking on the TestSuite and selecting 'Launch Testrunner') it works fine i.e i get message 'Execution finished successfully'. But when i try to run the command generated by Launch Testrunner in the command prompt i get the following error

soapUI Pro 3.5.1 TestCase Runner
usage: testrunner [options] <soapui-project-file>
-o Opens the JUnit-Style and/or Coverage Report in a browser (with the
-j and/or -g options)
-F Report format. Used with -R. Valid options PDF, XLS, HTML, RTF,
CSV, TXT, and XML (comma-seperated)
-v Sets password for soapui-settings.xml file
-t Sets the soapui-settings.xml file to use
-A Turns on exporting of all results using folders instead of long
filenames
-D Sets system property with name=value
-G Sets global property with name=value
-I Do not stop if error occurs, ignore them
-P Sets or overrides project property with name=value
-R Report to Generate
-S Saves the project after running the tests
-a Turns on exporting of all results
-c Sets the testcase
-d Sets the domain
-e Sets the endpoint
-f Sets the output folder to export results to
-g Sets the output to include Coverage HTML reports
-h Sets the host
-i Enables Swing UI for scripts
-j Sets the output to include JUnit XML reports
-p Sets the password
-r Prints a small summary report
-s Sets the testsuite
-u Sets the username
-w Sets the WSS password type, either 'Text' or 'Digest'
-x Sets project password for decryption if project is encrypted
Missing soapUI project file..

What does it mean by 'Missing soapUI project file'?
Do i need to do any path settings in Launch Testrunner before running it to get the command.
Kindly help..

Thanks in advance.