I have one app (a fat client) that I am using Citrix to publish out to about 80 - 100 users. I have this program loaded on my test server with 2003 standard and XPa. So far I havent run into any issues but I keep hearing horror stories from people using 2003 and server 2000 with sp4. I'm real lucky, this app runs print jobs from a rs/6000 so printing will not even be an issue. Should I run this on 2003 and wish for the best or should I load the farm with server 2000 sp3 and wait for a 2003 service pack or two to be released? Any thoughts or ideas? Anyone have any luck with 2003? Like I mentioned everything so far has run pretty smooth. Thanks!