Sergio:
Adding SF to your SONAR menu is relatively easy and worth it. It allows you to highlight a portion of an audio track or the whole track, press the menu iitem SF10 and that audio data is passed to SF for further editing. All of SF's 32 bit plugins will work as the the host, SF is 32 bit.
If you haven't already and want to add SF to your Utilities menu in X1 I can send you a *.reg file which will automatically make the appropriate entries in your registry for you.
Then navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\Tools Menu\Sound Forge 10
and change 'Sound Forge 10' to 'Sound Forge your version'
within the registry key you need to edit 3 of the entries: just double click the following bold text in your registry to open the editor where you make the changes
exepath to the full path of your SF program .exe file
Menutext to &Sound Forge your version
StatusBarText to run Sound Forge your version
Make a backup of your registry before you begin.
If you find it too difficult send me the info about your version of SF and where the .exe file is located on your system and I'll write the reg file for you then all you'll have to do is double click to run it and that's it.
You also need to enable "share drivers with other programs" so that while SF has focus it can use the audio interface.