What they didn't tell you about selenium firefox webdriver

i wasted lot of time on this, no need for you to waste as well. i don't know if its specific to my os. (win 2003 unfortunately). but i'm using latest selenium 2.25.0 and nomatter what using FireFoxDriver i continuously got this error while running selenium from java:

org.openqa.selenium.WebDriverException: Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: XP Build info: version: '2.25.0', revision: '17482', time: '2012-07-18 22:18:01' System info: os.name: 'Windows 2003', os.arch: 'x86', os.version: '5.2', java.version: '1.7.0_03' Driver info: driver.version: FirefoxDriver

now nomatter what i did, updated the system property path for firefox bin, make selenium in a different folder THE ONLY THING THAT WORKED IS THIS: copy Mozilla Firefox into a folder iwth no spaces! like D:\dev\firefox\ now puet d:\dev\firefox in your PATH! THIS WORKED! :)