Requirement is below
AT Option1
Registry entry
HKEY_LOCAL_MACHINE\SOFTWARE\Micromass\
key1 value1
key2 value2
key3 value3
AT Option2
Registry entry
HKEY_LOCAL_MACHINE\SOFTWARE\Micromass\
key1 value4
key2 value5
key3 value6

Registry structure and the key names are same, only differ in the values.

To attain this i have followed

COM1
--File1
--File2
--File3
Registry entry
HKEY_LOCAL_MACHINE\SOFTWARE\Micromass\
key1 value1
key2 value2
key3 value3
COM2
--File4
--File5
--File6
Registry entry
HKEY_LOCAL_MACHINE\SOFTWARE\Micromass\
key1 value4
key2 value5
key3 value6

And put a condition for those components to installed it for proper Options