btw: what do you mean by "custom" you can't just run the exe?
As in, ran the EXE, selected "Install" option, chose the "Custom" radio button and Next until installed. No reboot required.
BTW your CCC/driver will likely NOT indicate there is an update for a while, but as the screenshots show, Windows Update knows its there. Also, the 64-bit release is for Vista, Windows 7 and Windows 8.
If you post your Hardware IDs (Device Manager -> Display* -> AMD* -> Details) I will check my *.INF files for the 7690M XT support. Incidentally, the "Intel Media Components" above and the Intel driver on the system are AMD signed (they have to be, it's an x64 Win O/S thing).
What is the date and version of your Intel driver? I pulled apart the 12.11 beta package and there was no Intel driver to be found.
- Windows 8 Pro