Lucky for me I got the valve adjustment tool set (4 different size tools) from Harbor freight for $25. Unfortunately they don't sell them anymore. I HIGHLY suggest some kind of tool, either the Snap-On or Harbor Freight variety, for doing the job on a DOHC VTEC head. It's much easier on non-VTEC heads.
Another piece of advice is to double and triple-check the clearances, both when you adjust it and after you torque the adjusting nut.
Lastly, ONLY adjust the valves that need adjustment. The first time I did mine, I just loosened all 16 nuts and went to town, ended up with terrible noises from the engine :doh: Go through and check all the clearances, and only adjust the ones necessary, it will help save some time and possibly headache.