How do I generate unique GUIDs from ASP?

There is a free component that will help you do this; it is called GUIDMaker and is available at ServerObjects Inc. 
 
If you have access to SQL Server from your ASP page, you can call the following script: 
 

<%      set conn = CreateObject("ADODB.Connection")      conn.open "<connection string>"      set rs = conn.execute("SELECT newid()")      Response.Write rs(0)      ' ...  %>

 
Or from ASP, you can use this: 
 

<%      Function GetGuid()          Set TypeLib = CreateObject("Scriptlet.TypeLib")          GetGuid = Left(CStr(TypeLib.Guid), 38)          Set TypeLib = Nothing      End Function      Response.Write GetGuid()  %>

 
If you're wondering why we only take the left 38 characters out of the GUID, see Article #2358.