It seems like you are facing compatibility issues while trying to use your Genius Trek 320R camera with Windows 7 RC x86. Here are a few steps you can try to resolve the "error 80040154: Cannot create capture video filter" and the other issues you mentioned: 1. 
Compatibility Mode: Try installing the camera drivers in compatibility mode for Windows Vista. Here's how you can do it: - Right-click on the driver setup file and select "Properties." - Go to the "Compatibility" tab. - Check the box that says "Run this program in compatibility mode for" and select "Windows Vista." - Click on "Apply" and then try installing the drivers again. 2. 
Driver Updates: Check if there are newer drivers available for your camera that are compatible with Windows 7. You can visit the Genius website or the manufacturer's website to download and install the latest drivers for Windows 7. 3. 
Device Manager: - Press 
Windows key + X and select "Device Manager." - Look for your camera under "Imaging devices" or "Sound, video and game controllers." - Right-click on the camera device and select "Uninstall device." - Disconnect the camera, restart your computer, and then reconnect the camera to let Windows install the drivers automatically. 4. 
DirectShow Filters: - It's possible that DirectShow filters are causing the issue. You can try resetting the DirectShow filters by running the following command in Command Prompt: 
	
	
	
		Code:
	
	
		cmd regsvr32 "quartz.dll"
	 
  5. 
Software Conflicts: - Ensure that no other applications are using the camera simultaneously. Close any programs that might access the camera, such as video conferencing software, and try accessing the camera again. 6. 
MSN Messenger Settings: - In MSN Messenger, go to "Tools" -> "Audio and video setup" and make sure the correct camera is selected. If there are multiple options, try selecting the camera again and save the settings. Try these steps and see if they help resolve the issue. If the problem persists, feel free to provide more details for further assistance.