He're a server running in 32bit you will normally see x86

Microsoft SQL Server 2000 - 8.00.194 (Intel X86)

Aug 6 2000 00:57:48

Copyright (c) 1988-2000 Microsoft Corporation

Personal Edition on Windows NT 5.2 (Build 3790: Service Pack 2)

Here's sever running in 64bit obviously there is a 64-bit after the edition

Microsoft SQL Server 2005 - 9.00.4035.00 (X64)

Nov 24 2008 16:17:31

Copyright (c) 1988-2005 Microsoft Corporation

Enterprise Edition (64-bit) on Windows NT 5.2 (Build 3790: Service Pack 2)