A PC Pentium Compatible or higher and at least 64 Mb RAM. TNail has been tested and works well under Windows 2000, Windows XP Professional, Windows XP Professional X64, Windows 2003 Server and Windows Vista. Changes are it might run also under Windows 98 and Millennium although this hasn't been tested.

TNail also requires MSXML 4.0 and GDIPLUS. GDIPLUS and MSXML 4 are included by default on Windows XP and above. They are also installed if you have installed the .NET framework runtime. If you are running Windows 2000 and you haven't them installed, you can get both GDIPLUS and MSXML from Microsoft Home Page.

Links:
- GDIPLUS page and MSXML page on microsoft.com.
- MSXML page on microsoft.com.