whether using a remote or local webserver, you need to supply a URL prefix.
for a local server the URL is:
http:/localhost/
this address maps to the c:\inetpub\wwwroot\ folder.
In IIS you can create virtual directories that point to locations on your computer outside the wwwroot, see the following for information:
cc771804%28WS.10%29.aspx
Since you are using powerstore in an existing site and want to be able to edit the power store files with WebAssist Extensions you will need to separate the two. here is how I would configure it:
1) Create a folder on the c drive named websites:
c:\websites
2) Create a virtual directory in IIS named websites and point it to c:\websites
3) create folder under c:\websites called existingsite:
c:\websites\existingsite
4) create folder under c:\websites called powerstore:
c:\websites\powerstore
5) create a site in dreamweaver for the existing site.
a) on the local info tab set the Local Root Folder to:
c:\websites\existingsite
b) on the local info tab set set the HTTP Address to:
existingsite
c) on the testing server tab select PHP / my SQL as the server model
d) on the testing server tab set the access to Local\Network
e) on the testing server tab set the Testing Server Folder to:
c:\websites\existingsite
f) on the testing server tab set the URL Prefix to:
existingsite
6) create a site in dreamweaver for the powerstore.
a) on the local info tab set the Local Root Folder to:
c:\websites\powerstore
b) on the local info tab set set the HTTP Address to:
powerstore
c) on the testing server tab select PHP / my SQL as the server model
d) on the testing server tab set the access to Local\Network
e) on the testing server tab set the Testing Server Folder to:
c:\websites\powerstore
f) on the testing server tab set the URL Prefix to:
powerstore
put the powerstore files in the c:\websites\powerstore folder and the existing site files in the c:\websites\existingsite folder.