Affects systems
Installing the Bradstone 3D Garden Viewing software on Windows XP Home or Windows XP Pro systems

Symptoms
When you install the Bradstone DVD software, the Garden Designer installs correctly, but when the installation of the Bradstone 3D Garden Viewer commences, the following error message is displayed.

c:\windows\system32\Autoexec.nt.
The system file is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the application. 

If you click close (or retry) the application usually stops.
 
References
Please refer to Microsoft knowledge base article 324767 for a detailed description of this problem.
 
Cause
This issue will occur if one or more of the following files are missing or damaged on your PC.
1 Config.nt
2 Autoexec.nt
3 Command.com
These three files exist in the System32 folder, within your Windows root folder. In the vast majority of cases, files (1) and (2) will have been damaged at some time in the past on your PC - and will cause the above error message to occur.
 
Resolution on XP systems
Restoring the original versions of these files (taken from your systems Microsoft XP master CD) will fix this problem. Note that you will need appropriate rights of access in order to update these files. Please contact your IT administrator if required.

1. Place the Microsoft XP CD for your computer into the CD (or DVD) drive
2. Click Start (bottom left of task bar) and then click Run
3. In the OPEN box, type CMD and then click OK
4. At the command prompt, type the following commands exactly as shown (substitute the CDROM drive letter on your system for: "CD-ROM_DriveLetter"), pressing ENTER after each.
 
 expand CD-ROM_DriveLetter:\i386\config.nt_   c:\windows\system32\config.nt
 expand CD-ROM_DriveLetter:\i386\autoexec.nt_   c:\windows\system32\autoexec.nt
 
5. Reboot your PC
6. Install the Bradstone software again.
 
If the problem is still unresolved after taking these steps then the target system has suffered damage involving more than just the two files autoexec.nt and config.nt at some time in the past. Please refer to Microsoft knowledge base article 324767 for a more detailed analysis of the solutions open to you.
 
Remember - always backup key data before making any changes whatsoever to your PC as TRGS Ltd cannot be held responsible for any loss or damage resulting from any solutions or suggestions outlined in the above notes. Microsoft, Windows, Windows 98, Windows ME, Windows 2000 and Windows XP are trade marks of the Microsoft Corporation.