1. Operating system version – is it Windows 98 Gold (aka First Edition), Windows 98 Second Edition or Windows Millennium? 2. KernelEx version - as displayed at the bottom of the Compatibility tab or in Add/Remove Programs tab 3. Program vendor, program name and program version. 4. Description of the problem. 5. Exact steps required to reproduce the problem - what to click and what to press after the program starts 6. Did the program work prior to installing KernelEx? Does disabling KernelEx in compatibility tab fix the problem? - important to classify the category of the bug. Problem: 1. Windows 98SE 2. KernelEx 4.0 Final 3. Adobe Flash Player 10 4. Refuses to install, says incorrect operating system Notes: I did create xp.reg with the following contents: REGEDIT4 [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion] "CurrentVersion"="5.1" And it did not help remedy the situation.