Getting test step response in another test suite

Hi,

I have following testsuite structure ,

TestSuite1
-TestCase1
-TestStep1
TestSuite2
-TestCase2
-TestStep2
- GroovyScript2

i want to do following things in the GroovyScript2 of TestSuite2
-Execue "TestStep1" of TestSuite1
-Get the "TestStep1" response and use this response in the TestStep2 execution

New to Groovy and SOAP Ui , Please help me in this.. how to write the groovy script for this..
Thanks in advance.