Hi,
sorry.
Solution found.
•IIS 8.0 Express doesn't run as a service or require administrative privileges to perform most tasks
When you install IIS 8.0 Express on a 64-bit system, both the 32-bit and 64-bit versions of IIS 8.0 Express will be installed respectively in the "%ProgramFiles(x86)%\IIS Express" and "%ProgramFiles%\IIS Express" folders.
So i think, there is no problem at all.