ActiveX Manager is a utility software for ActiveX control registered on your local computer. I found it helpful when I dig around to find Sharepoint's upload control.
Below is a sample report generated for my box, which runs Windows XP Pro SP2, all up-to-date MS updates, Office 2003, VS.NET 2003 and 2005, SQL2003 and 2005, et al.
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Computer Name: xxxx
Generated On: Monday, January 30, 2006
Control Count: 159
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Control Name: Ref Edit Control
Version: 1.0
Status: Registered
ProgID: RefEdit.Ctrl
CLSID: {00024512-0000-0000-C000-000000000046}
TypeLib: {00024517-0000-0000-C000-000000000046}
File Location: C:\Program Files\Microsoft Office\OFFICE11\REFEDIT.DLL
File Size: 77824 Bytes
Created: 05/08/03 21:54:00
Modified: 05/08/03
Accessed: 01/27/06
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Control Name: Microsoft Data Bound Grid Control 5.0 (SP3)
Version: 1.0
Status: Registered
ProgID: MSDBGrid.DBGrid
CLSID: {00028C00-0000-0000-0000-000000000046}
TypeLib: {00028C01-0000-0000-0000-000000000046}
File Location: C:\WINDOWS\SYSTEM32\DBGRID32.OCX
File Size: 525352 Bytes
Created: 06/24/98 00:00:00
Modified: 06/24/98
Accessed: 01/30/06
--------------------------------------------------------------------------------
Control Name: Microsoft Office XP Web Components
Version: 1.0
Status: Registered
ProgID: OWC10.Spreadsheet.10
CLSID: {0002E551-0000-0000-C000-000000000046}
TypeLib: {0002E550-0000-0000-C000-000000000046}
File Location: C:\PROGRA~1\COMMON~1\MICROS~1\WEBCOM~1\10\OWC10.DLL
File Size: 7330360 Bytes
Created: 08/04/03 13:19:34
Modified: 08/04/03
Accessed: 01/27/06
--------------------------------------------------------------------------------
Control Name: Microsoft Office Web Components 11.0
Version: 1.0
Status: Registered
ProgID: OWC11.Spreadsheet.11
CLSID: {0002E559-0000-0000-C000-000000000046}
TypeLib: {0002E558-0000-0000-C000-000000000046}
File Location: C:\PROGRA~1\COMMON~1\MICROS~1\WEBCOM~1\11\OWC11.DLL
File Size: 8086072 Bytes
Created: 08/01/03 15:09:04
Modified: 08/01/03
Accessed: 01/27/06
and on...
