There are two possible ways. You could just move the document into the other folder in postAddDocument after it was created in the current folder. I could also make a small modification to seeddms and you could change the folder in the controller within the preAddDocument hook. The later call of $folder->addDocument() will then take the folder you have set.
Instead of making it world readable, you should rather change the owner or group and set it to 755 or 775.
This is not a discussion forum, so please don't use as such. Your are missing PEAR in your WAMPP installation.
Log.php can be found in seeddms51x/pear
Then you need to change the databas configuration in settings.xml and adopt the paths in that file.
In the simpliest case you don't need to change anything, if your apache configuration and all paths are identical on the new server.