3rd SBS 2008 Installation for me. First one utilizing the shared fax. SBS 2003 shared fax has always been a breeze. Fax on SBS 2008 is setup to receive and print automatically - no problems. Xp Pro clients have fax services installed via add/remove programs - shared fax from SBS machine installed via Add printer/fax wizard on XP machine using \\servername\fax. Double-clicking fax on XP machine brings up fax console where inbox is full of all incoming faxes, can view the tif files no problem. The problem resides on the xp machine (pro - joined to domain) in either using the 'new fax' option on the fax console or using the start-applications-communication-send a fax. Most of the times nothing happens, sometimes a "check network connection to fax" message comes up. XP Pro machine is SP3 - all firewall disabled to eliminate possibility of conflict. Same subnet - disable antivirus, even asked it nicely. This has me puzzled. The only thing I can think to try next is to the add the 32bit driver for the usrobotics external/serial modem on the SBS 2008 Server. (64 bit is only one listed, but it installs on 32-bit xp machine) Any help would be greatly appreciated!! Technical clarification(s) upon request! I have followed white-papers and technet articles for this.