Hey @Ipshita, We can use WebDriverBackedSelenium() method to run Selenium 1.0 tests in webdriver. Following code snippet will explain how you can initiate Webdriver Backed Selenium to run Selenium-RC/ Selenium 1.0 test cases:
WebDriver driver = new FirefoxDriver();
Selenium selenium = new WebDriverBackedSelenium(driver,"http://www.google.com");