Another way is with Excel.
Create a spreadsheet (I'll link the blank one) and pretty simply fill in the blanks.
There's 2 ways to use the spreadsheet. 1) Use the MyODBC driver for Office 2000 (not Office XP) and insert the entries, 2) Simply copy the rows and paste them into eq.items in Navicat.
At this time, I would suggest that you *DO NOT* try to make bags. It seems that EQ doesn't like custom bags, as it appearantly ties the IDFILE and Icon/Graphical with actual data embedded and can lock the EQ client when attempting to open the bags.
Examples of Items Created...
http://eq.boxarray.com:82/charSelect.php?char=TestGM
All of this character's gear (minus the jewelry) was made with the spreadsheet trick and Navicat.
NOTE: do not update or edit the DB with EQLauncher, World or Zone running, as they cache the item table in shared memory mode and can crash if you summon the new item.
http://gpl.boxarray.com/tempdump/EQ_Item_Maker.xls (43kb) Contains Nameless GM gear as example.
The DB on BoxArray won't be updated till tomorrow (THursday night DB mirror). The Items in the Excel spreadsheet are current and contain several Skillmods and a few changes (they are ALL/ALL for equipable and no longer attunable).