in the tutorial he is using the EXACT same tool as you are, providing you as well are using ronny's pwTools... regardless gshop editing is the exact same no matter what editor you are using...
Okay so there are 4 files1: gshop.data - This is the main boutique file for the client-side part of your server
2: gshop1.data - This is the event boutique file for the client-side part of your server
3: gshopsev.data - This is the server side file of the main boutique. must be time stamped with the exact same time stamp of the gshop.data.
4: gshopsev1.data - This is the server side file of the event boutique. this again must share the exact same time-stamp as the corresponding client side file (gshop1.data)
Note: The gshop.data and gshop1.data can be collected from the client while the gshopsev.data and gshopsev1.data is collected via the server.
Now open the gshop.data (or gshop1.data) in the boutique editor by clicking "import 1.4.4 client".
after you opened said file, Find the category you want, and a sub-category in the editor.
after you are in the category and sub category you wish to add files to, move your cursor to the items section and right click then click add.
doing this should add a new item, it will be called "[1] New" the more items you add the higher the bracketed number gets.
after you added the new item, goto Item ID and put the ID of the item you wish to add in there.
you MUST set a price for every item you add.
when you are done click "get" next to the timestamp
then move back up to file and click "export 1.4.4 client" then "export 1.4.4 server" (only save the one you edited ex: I edit gshop.data i export gshop.data and gshopsev.data)
upload the files to your server and client then restart the world map.
Did I loose you anywhere? because if I did please tell me because there is really no other way to explain how to edit the gshop.