Hi All, I posted this on the Logic Windows users group, but since it has just 11 members vs. the thousands here I thought I might get more response here. I recently upgraded GigaStudio to version 3 and built an Athlon 64 system to run it. It just plain doesn't work. Either midiover LAN+ doesn't work or it can't find my many .gig files or a kernal driver doesn't load or it doesn't see my GSIF1 card or some combination of the above. Tascam tells me that 64 bit processors are not supported and the techs just don't want to work with me. I asked Tascam if I could switch the registration to another machine (an Athlon 2200+ system currently running Logic 5.51) and they said yes you're allowed two reregistrations. Both systems have 400 MHz busses, use PC3200 DDR RAM, both have ATA100/133 busses and 7200 RPM drives. Here are my concerns; 1. The Athlon 2200+ system will have to have it's OS upgraded to Service Pack 2, i.e. put it on the web and do the Windows upgrade. That means it will be on the web and vulnerable during the upgrade process. Should I be concerned about this (the system will be disconnected from the web once the upgrade is done)? 2. I'll lose some anticipated performance with the slower processor plus I'll be limited to 1 GB of RAM, what level of performance can I expect from the Athlon 2200+ system for GS3? 3. I could upgrade the processor to a faster Socket A processor, would this be worth it? I believe my CPU cooler is limited to Athlon 2600+. 4. Are there issues running Logic 5.51 on an Athlon 64 system with Windows XP service pack 1 or 2? Your thoughts, concerns or red flags raised will be appreciated. Thanks. Steve Chandler http://www.audiostreet.net/stevechandler http://www.soundclick.com/stevechandler