diff -r dfe62f685538 Lib/webbrowser.py
--- a/Lib/webbrowser.py	Wed May 27 22:00:46 2015 -0700
+++ b/Lib/webbrowser.py	Thu May 28 08:23:04 2015 -0500
@@ -495,10 +495,29 @@
 #
 
 if sys.platform[:3] == "win":
+    # Access the windows registry to later determine what browsers are on the system
+    import winreg, platform
+    HKLM = winreg.HKEY_LOCAL_MACHINE
+    subkey = r'Software\Clients\StartMenuInternet'
+    read32 = winreg.KEY_READ | winreg.KEY_WOW64_32KEY
+    read64 = winreg.KEY_READ | winreg.KEY_WOW64_64KEY
+    key32 = winreg.OpenKey(HKLM, subkey, access=read32)
+    key64 = winreg.OpenKey(HKLM, subkey, access=read64)
+
     class WindowsDefault(BaseBrowser):
+        # Windows Default opening arguments
+        cmd = "start"
+        newwindow = ""
+        newtab = ""
         def open(self, url, new=0, autoraise=True):
+			# Format the command for optional arguments and add the url
+            if new == 1:
+            	self.cmd += " " + self.newwindow
+            elif new == 2:
+            	self.cmd += " " + self.newtab
+            self.cmd += " " + url
             try:
-                os.startfile(url)
+            	subprocess.call(self.cmd,shell = True)
             except OSError:
                 # [Error 22] No application is associated with the specified
                 # file for this operation: '<URL>'
@@ -506,19 +525,60 @@
             else:
                 return True
 
+    # Windows Sub-Classes for commonly used browsers
+    class InternetExplorer(WindowsDefault):
+        cmd = "start iexplore.exe"
+        newwindow = ""
+        newtab = ""
+
+    class WinChrome(WindowsDefault):
+        cmd = "start chrome.exe"
+        newwindow = "-new-window"
+        newtab = "-new-tab"
+
+    class WinFireFox(WindowsDefault):
+        cmd = "start firefox.exe"
+        newwindow = "-new-window"
+        newtab = "-new-tab"
+
+    class WinOpera(WindowsDefault):
+        cmd = "start opera"
+        newwindow = ""
+        newtab = ""
+
+    class WinSeaMonkey(WindowsDefault):
+        cmd = "start seamonkey"
+        newwinow = ""
+        newtab = ""
+
     _tryorder = []
     _browsers = {}
 
     # First try to use the default Windows browser
     register("windows-default", WindowsDefault)
 
-    # Detect some common Windows browsers, fallback to IE
-    iexplore = os.path.join(os.environ.get("PROGRAMFILES", "C:\\Program Files"),
-                            "Internet Explorer\\IEXPLORE.EXE")
-    for browser in ("firefox", "firebird", "seamonkey", "mozilla",
-                    "netscape", "opera", iexplore):
-        if shutil.which(browser):
-            register(browser, None, BackgroundBrowser(browser))
+    # Detect some common Windows browsers
+    # Check both 64 bit and 32 bit location if vista os is being used
+    if platform.win32_ver()[0] == "Vista":
+        browsers = set([winreg.EnumKey(key32,i) for i in range(winreg.QueryInfoKey(key32)[0])])
+        browsers = browsers|set([winreg.EnumKey(key64,i) for i in range(winreg.QueryInfoKey(key64)[0])])
+    else:
+        browsers = [winreg.EnumKey(key64,i) for i in range(winreg.QueryInfoKey(key64)[0])]
+
+    for browser in browsers:
+        browser = browser.lower()
+        if "iexplore" in browser:
+            register("iexplore",None,InternetExplorer("iexplore"))
+        elif "chrome" in browser:
+            register("chrome",None,WinChrome("chrome"))
+        elif "firefox" in browser:
+            register("firefox",None,WinFireFox("firefox"))
+        elif "opera" in browser:
+            register("opera",None,WinOpera("opera"))
+        elif "seamonkey" in browser:
+            register("seamonkey",None,WinSeaMonkey("seamonkey"))
+        else:
+            register(browser, None, WindowsDefault(browser))
 
 #
 # Platform support for MacOS