Help with packet editing.

I'm using WPE Pro to packet edit. So far I've figured out how to edit an item ID inside a packet and change it to another items ID to get the item I want. So now I've moving up to attempt to get EO cards. I've got the item ID however when I use it I get nothing. I figured out that using the method I used, I have to change the vendor ID for some items depending on which vendor sells that item. So to take it one step further (if possible) I'd like to know if it's possible at all to bypass needing a vendor ID (thus bypassing the requirement to actually pay for the item) and just get an item straight out of the DB no strings attached. Maybe if there is a certain way that the server recognizes a GM command for spawning an item that can be exploited.

If any of that was confusing please ask me to clarify and I'll do my best. I'd really like some help on this.

I don't know if you're still following this topic, Choujichan, but if you are, can you point me to some information on how I could use WPE pro to edit the item IDs? This could be incredibly useful. Even if you can't get straight EPs from it, it could be very useful to get eggs and whatnot.