I'm an address bar kind of guy. I constantly type in command line or web site urls. Start -> Run is just not as convienent. I don't do much Microsoft-bashing but I don't really see the logic in taking away the address bar in the Windows XP SP3 update when it is still available on other Windows-based OSs. It is supposedly due to an anti-trust ruling (http://social.technet.microsoft.com/forums/en-US/itproxpsp/thread/6748d140-cde9-4705-9612-7013a6bcd910/)...but I digress.
Thankfully our friends over at muvenum.com have created a free app called MuvEnum Address Bar to replace this feature. You can find the download here: http://www.muvenum.com/products/freeware/
I've been running this tool on my personal laptop since Windows XP SP3 came out. I am installing it this morning on my client desktop workstation (XP SP3 is in the process of being rolled out here).
cheers
jk