Help a Newbie combine multiple pre-existing models $25 reward

[kevlamar]

Thank you all for your advice.  my understanding of this is begging to come together. Someone please name your favorite charity and i will donate the $25 to show my gratitude. 

My newest obstacle:  some of the blocks i used in Lego designer are not carried over to LCad. How do i get those blocks into LCad. Keep in mind i am a novice. 

I have included two files, on is lego designer the other is the LCad file and you will notice all the walls to the one building are missing. 

Thanks again everybody.

kevin