SI registration madness

hi i have been trying to register my studio instruments package for months within MC5 to no avial. When i open up each instrument, the reg number box is greyed out and i cant put in the code if i dont log i as administrator, but then when i do log in as administrator only the 64 bit versions of the SI instrumnts come up and i already registered those, but i cant record with these inside MC5 only outside. hmm any solutions.?

I didn't remember having to register SI - or is this the SI you bought separately from cakewalk e-store maybe?

Looks like Jason got the whole SI bundle seperately.
Jason, you may need to uninstall SI and just re-install the 32-bit version.
Strange but true story.
When I bought this new, Win 7 64-bit computer, I installed SONAR Home Studio 6 XL 32-bit version on it, not to use as my DAW, but so I could use it when trying to help folks who have questions about Cakewalk programs.
Everything woked fine, including TTS-1 and all the other soft synths. Had to Run as Administrator of course.
Then I decided to install the 64-bit version to see what differences there were. That also worked fine except the 32-bit-only synths and effects didn't work, as expected. But in the 32-bit version, TTS-1 disappeared! I could see it on the hard drive, it was where it was supposed to be, but it wasn't in the list of soft synths under the Insert menu. But it did install if I used the preset simple instrument tracks. ????
So I uninstalled the 64-bit SONAR. Still no TTS-1 in 32-bit.
Tried to uninstall the 32-bit, I got an operation not allowed message, or something like that. Eventually I tried a repair install from the SHS 6 disk. That seemed to be working until the very end when an error message appeared, loading stopped and the original SHS 6 XL also disappeared from the computer. Nowhere to be found. It seeems that trying to re-install the program uninstalled the first program.
The mysteries of computers will always remain for me.