installing extensions in PS - can't do it and don't know why

I swapped computers and want to install two adobe CS extensions i used regularly on my old machine (Dr Brown's Services, and watermark script), but for some reason my machine is not allowing this. I am running Win7 and CS 4, and have opened CS 4 as an admin. Still, no luck.

when trying to install the Dr Brown services, I get "You do not have the appropriate persmissions required to perform this operation. Contact your system administrator to obtain permission."

For the Watermark script, i get "Can't create folder 'C:\Program Files\Adobe\Adobe Photoshop CS4 (64 Bit)\Plug-Ins\Panels\Watermark'. I created that folder manually via Explorer but that didn't help.

any ideas?

a few friends got me to succeed...i had to change window's UAC to the lowest level, restart, install the scripts and i am good to go.

Ah. Had a similar issue on OSX once, and just plain-old copying all the files needed to the correct folders worked…