Bill: We know that Fractint definitely does work on WinNt and Win2000, and that Fractint also runs on some of the other WinXp systems that belong to members of this mail list. We know that Fractint works on your system when it is booted from DOS. that eliminates the possibility of hardware problems between your PC and your video card and Fractint. I think that you have eliminated almost all possible causes of your software and OS problems. I suspect that your problem is determining the proper configuration WinXp and your Dos box. If I were you, I'd start looking up the MS WinXp "trouble-shooting knowledgebase" Database, for running Dos programs on WinXp. If all else fails, you can use the "multiboot" idea, which I have used in the past with Win2000. There used to be a multiboot menu feature in WinNt and Win2000 that would allow you the choice to boot to either a FAT16 DOS partition, and run DOS, or to boot to an NTFS partition and run WinNt and/or Win2000. I don't know if that feature still exists in WinXp Norton also had a multiboot utility that used to be called Norton Commander (not to be confused with the really really ancient DOS file management utility by the same name.) which is probably still available from somebody. All the best, Tony ----- Original Message ----- From: BillatNY@aol.com To: fractint@mailman.xmission.com Sent: Sunday, October 20, 2002 9:42 PM Subject: Re: [Fractint] Re: Fractint and Windows XP In a message dated 10/20/2002 1:05:36 PM Eastern Daylight Time, tgparker@worldnet.att.net writes: What are your default desktop video settings when in Windows XP? You can determine that by right-clicking your mouse on a blank part of your standard desktop and then clicking your "settings" tab. Is there a possibility in XP that you can't exceed the default video settings of your desktop? i.e. if your default video settings are at 640x480 you can't access 800x600, also check the settings of your Fractint.exe "Dos box". My screen resolution in XP is set at 800 x 600 so that can't be it. I looked at the settings of the DOS box. The only setting I can see that directly addresses resolution is on the Compatability tab. There is a box to check off that says "Run in 640 x 480 screen resolution." I have it unchecked. (I've tried it both ways and it doesn't change anything.) The memory settings of the DOS box are set at the defaults. Per Steven Hessler's info posted here last week, these shouldn't matter. Bill Rossi