Before proceeding I recommend that you download and install this file.

http://ccrp.mvps.org/download/cooltools/ocxdllreg.reg

"The OCX/DLL RegSvr Context Menu is a registration file which, when merged into your registry by double clicking or installing, adds 'Register' and 'Unregister' commands to the context menu displayed when right-clicking a ocx or dll file. This is a timesaver, removing the need to run regsvr32 from the command line to register controls and libraries. It is available as a zip and a reg file - the reg file version will install immediately if you specify 'Open" when downloading."

WARNING!!  Do This Only Once
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Then go to this webpage:
http://freeware.it-mate.co.uk/?Cat=OCX_Files

Download the zip file(s) of the ocx controls you need and unzip them to your windows system folder.  Right click on the OCX file(s) and choose register.