You will have to edit the XML, and I've been meaning for a couple of days to throw this out to the forums. All of the custom homescreens that you download will use the standard MRU, but if you're like me you want to keep the specific programs that you've setup through "Personalize my Q". To do this you'll need to open up the XML file in an editor (I just use Notepad). Find where the MRU code is (most coders are nice enough to put a comment at the beginning of the section) and replace it with this code:
MRU list: using small icons --> - - - <plugin clsid="{D79E963B-2730-499c-A2CA-E48F383E6417}" name="startmru"> <translaterockerkeys /> <background b-border-width="0" /> <mru icon-size="16" x="68" y="8" halign="left" valign="center" max-buttons="8" /> </plugin>
So far for me that has worked on every homescreen I've downloaded, YMMV. I hope this helps.