Hehe, yeah more than really noobish but I will try to explain.. /smile
You go to your database manager - SQLYog, Navicat, HeidiSQL etc..

Then you click on your world database which might be called 'ascent' or 'ascent_world' and you right click on that database and you will get a menu. You then click 'execute batch file' or 'execute sql batch' something like that. You click that and select your file with the items in. If it is the correct file which should be a .sql then it will do it successfully then go in-game and type '.reload items' and voila! You now have your items, to spawn them put '.additem <id> of the item'
Hope that helps!
Shaun.