I recently installed a wireless network in a small office with 3 computers, 2 running W98 and upgraded the 3rd to XP Pro. Everything is working fine (printers etc.) except for the most important program which is installed on the XP machine-an old DOS financial program which was previously accessible by the other 2 computers. The 2 W98 computers have a standalone version on their computers but at somepoint in the brokerage transaction they must access the main program on the XP machine. Previously when it was on an old W98 machine it worked fine. That one was replaced with the XP machine and the financial DOS program was installed by copying the whole folder over and changing the attributes as directed by the programmer. The program was accessed by mapping the drive on the W98 computers. Now when the program is accessed the XP computer locks up. I am only going on what the owner has told me about this program - that it works just fine on an XP computer but there is obviously something missing. The Zone Alarm Pro firewall is configured correctly to allow access. I need help to correct this problem please. The office cannot function without it working correctly.