The new Windowless SELECT control in Internet Explorer 7 was designed to replace the Windowed SELECT control, but some compatibility issues with Microsoft Office caused Microsoft to support the Windowed SELECT control for programs that you specify.

If you open a CMD.EXE and type reg query "HKLM\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_USE_WINDOWEDSELECTCONTROL", you receive:

! REG.EXE VERSION 3.0                              HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_USE_WINDOWEDSELECTCONTROL                                  excel.exe   REG_DWORD       0x1                                  infopath.exe        REG_DWORD       0x1                                  powerpnt.exe        REG_DWORD       0x1                                  winword.exe REG_DWORD       0x1
The above programs default to using the Windowed SELECT control.

When MSHTML is loaded, the default behavior is to use Windowless SELECT control when an application has no Value Name in at the

"HKLM\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_USE_WINDOWEDSELECTCONTROL" key, or if it's data value is 0.
If your wanted to add YourApplication.exe to the list of applications that use the Windowed SELECT control, use the following command:
REG ADD "HKLM\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_USE_WINDOWEDSELECTCONTROL" /V YourApplication.exe /T REG_DWORD /F /D 1