You
first want to link your templates to actual files. That way you can
get to them from Dreamweaver. Go into MT's admin area and tie each
template to a file. For each template that you want to edit in Dreamweaver,
fill in a filename in the space labeled, "Link this template to a
file". Now, rebuild your site.
Example: if one of my templates
is "index.html", I tie it to a file called "index.tpl.html".
I never edit the actual "index.html", because that will
be overwritten the minute I rebuild the site.
Now you're ready to start editing. Startup Dreamweaver
and configure a new site using FTP to "edit directly on the server
using FTP. When you've connected and hit refresh you'll see the list
of files in your MovableType files. Remember, only edit the
source files. In my example, that's the ones with the .tpl.html
on the end. If you edit the files that MovableType creates (such as
index.html), you'll lose your changes in Step 3.
I've included screenshots below of how you should configure Dreamweaver to edit directly through FTP.
 1: Create a new site |
 2: Give it a name |
 3: I selected no server technology |
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4: Select Editing through FTP on the remove server |
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5: Setup the FTP account information |

6: Test it to make sure it works |
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7: Do not enable file checkin/checkout yet. |
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8: Confirm the details |
 9: You're ready to connect, hit the connect button on the Site panel |
 10: Now start editing index.tpl.html. Make a few edits (perhaps insert a comment) |
Now that you've made your edits, login to your MovableType
backend and hit the Rebuild option. This will rebuild your site from
the templates. You should see the fruits of your labor!