Upgrading MythTV from SVN

[Hoochster]

Is there going to be any problems with me upgrading the MythTV Packages by uninstalling them, and then manually compiling the latest SVN so that I can patch it with some stuff needed for Guide Data and such?  Basically what I am asking, is there any patches or anything I need to apply to make it work properly with LinuxMCE? 

Thanks for any assistance.

Hooch