Hi Berry
Let me say right up front, remodeing is a nasty job,it's best to build a new cabinet(s) and start over.....The screws don't come out,they snap off all the time or strip out when you remove the doors or other hardware, you will have a hard time getting to the face frame if they put it in from the back side.some used nails some used staples/screws to hold the face frame on, and the face frame is the base for most cabinets with doors and drawers.
You can also made new drawers to fit what you have now if you want, see the video,and use the standard drawer guides.
"I’m not sure how to line up the drawer fronts or doors????" = I Recommend you send off for a video b/4 you start, Marc Sommerfeld made a great one (video) and once you see it, you will say OK I can do that..
It will show you how to do all you want from A to Z.
You don't need to use or buy his bits but I do recommend them and you will see why once you see the videos
.
You can get a free video if you buy a item over 20.oo dollars from the web site,like his T & G set, it's bit high in price but it's neat and it works great,you can be a pro. with the 1st cabinet you make with them.
Cabinetmaking Made Easy DVD
http://www.sommerfeldtools.com/products.asp?id=4 http://www.sommerfeldtools.com/products.asp?id=1 http://www.sommerfeldtools.com/category.asp?id=6
T & G set below ▼
http://www.sommerfeldtools.com/products.asp?id=202
This is a great tool
http://www.sommerfeldtools.com/products.asp?id=175 http://www.sommerfeldtools.com/specials.asp
Hope this helps
Bj