I use www.wowhead.com it does almost the same thing but much easier.

Just lookup anything like normal then look in the address bar

should look like ...

http://www.wowhead.com/?npc=2471



Just use the number at the end of the address and it does the same thing.

Most wow websites i know about have there items saved to there server with the same numbers that wow uses... kinda creepy but it just makes things easier for them i guess