Server Requirements: Windows NT4/2000/XP, a COM client including Active Server Pages or Visual Basic, MDAC 2.0 or later. Microsoft Excel is not required on the server.

Operating System (Web Server) :
WinNT Server SP4 (IIS4 or IIS5) Or 
WinNT Workstation SP4 (Personal Web Server) Or
Windows 2000/XP (IIS 5.0)

Client Requirements

Spreadsheet:
Microsoft Excel 95/97/2000/XP or
Microsoft free Excel Viewer (all formulas will appear as "0") or
Another spreadsheet that supports Excel format (Quattro Pro, Gnome, Star Office)

Browser:
Microsoft Internet Explorer 4.0 or later on Windows 95/98/Me/NT/2000/XP or Macintosh
Netscape Navigator/Communicator 4.5 or later on Windows 95/98/Me/NT/2000/XP