Yes I answered you in Hardware, The Lexicons are well known problem child interfaces. They never update their drivers, I have the Lexicon MX200 and it only works in XP. I highly recommend you bring yourself up to date. 
Nothing wrong with staying with Windows 7. But good idea to update your interface and Sonar. 

M.G.
Thanks again for everyone's comments! Work has been hectic of late so I had to put recording on hold for a few weeks... I now have a long weekend, I will try to sort through X3 again (understanding that it will take longer than I originally thought).
 
Kenny and Chuck - it sounds like you both were in the same place I am now... and seeing you both got through it (and recommend X3) is encouraging  :)
 
 
M.G.
 
P.S.  some songs I recorded in 2008 (using Sonar 6 I believe):
www.reverbnation.com/bitd
 
 

M G ,
 
Hey man you have some nice sounding Hard Rock Music in your links ...
 
As far as your transition from SONAR 6 to X3  I'm not gonna BS you and tell you it's gonna be an easy one .
In all honesty I still get frustrated at times myself ...
When I was using SONAR 6 I was pretty much using it like a glorified tape machine that could also do midi ...
X3 brought so much more to the table compared to what appeared to be the limited functionality of SONAR 6 .
I found X3 to be somewhat of a shock as to realizing that I had everything I needed to get to the next level with my recordings ..the thing is I didn't know how to use what I had ..
As a guitarist I never backed down from that sort of challenge . I have pretty much enjoyed trying to learn new things and ways of playing my AXE ...
For some odd reason I found it very hard to apply the same adventuress willingness to learn mindset from my guitar playing over to using and learning my way around X3 ...
At the time I realized that I felt threatened by my own DAW  .. I also felt stupid most of the time because I didn't know what I was doing as I tried to learn new workflows ... When I did learn something useful and new , it only stuck for about  a day or two and then I had to relearn how to do it all over again ..
I think the one thing that saved me the most  from going under is I tried my best to keep the focus on my Music when all else seemed to fail
 
Good luck ...oh before I go I'm pretty happy with my Focusrite 2i4
all the best,
Kenny
 
 
 
 

I'd choose the Tascam 2x2 over the Scarlett for the pre amps and because it has A/C power option. The Stienbergs I would also think have better options at that price point. 
My biggest complaint about the 6i6 is the pre amps are over sensitive to input. You get it set with a nice level and, bang, it's gone over... So you turn it down a little bit and your track is now sitting at a very useless level. My Tascam does not suffer this at all. So I use a Joe Meek pre amp for most live input. So to each their own with pre amps but I'm shopping for a new interface which will most likely be a Motu.