Just to be sure (and it could be handy in the future) you could create a new site definition in DreamWeaver with your 'store' directory as the site root by creating a duplicate of your existing site definition, then editing that definition.
This doesn't mean moving any files about, it just forces DreamWeaver to treat the store folder as root as long as you're using that definition. The rest of the time you use your original site definition for your other site work.
In Dreamweaver menu, go to 'Site' > 'Manage Sites' > (select your site) > 'Duplicate' > then edit that site. Give it a name (PowerStore?) and in 'Local info' specify the store folder as the local root folder, and in 'Testing Server', do the same for 'Testing Server Folder' and 'Url prefix', and save that site definition.