For registering them do the following steps:

1.  Click on Start; Click on All Programs.

2.   Click on Accessories.

3    Right click on Command Prompt and run as administrator.

4.   Now register the ocx files

For Windows XP or older:
c:\windows\system2\regsvr32  Your_SolidGenius_Directory\bin\comctl32.ocx
c:\windows\system2\regsvr32  Your_SolidGenius_Directory\bin\msflxgrd.ocx

For Windows 7, 32 bit:
c:\windows\system32\regsvr32  Your_SolidGenius_Directory\bin\comctl32.ocx
c:\windows\system32\regsvr32  Your_SolidGenius_Directory\bin\msflxgrd.ocx

For Windows 7, 64 bit:
c:\windows\sysWOW64\regsvr32  Your_SolidGenius_Directory\bin\comctl32.ocx
c:\windows\sysWOW64\regsvr32  Your_SolidGenius_Directory\bin\msflxgrd.ocx
 

Note: Your_SolidGenius_Directory  is the location of the folder, where SolidGenius is installed