Creating new items

[jumblebum]

First of all...total newb with this stuff, but really eager to learn. I attempted to create a new item and I did something wrong. I looked at the items table and found an unused id...1261 i think. So I added a new row, assigned it an id of 1261 and created a new item. Now the shared_memory.exe crashes when it tries to load items. If i remove this row from the table, then everything works fine again.

I am guessing this is not the correct way to create a new item. Any insight or link to instructions would be greatly appreciated.