Dementium 2 Codes?

Hi Im up to chapter 2 and i can't get past the spider lock, how do i find the missing peice and i can't open the door that has a 3 number code.What is the code for the 3 letter combination code?

655

dw i found it, it's actualy 608.

Replying to #3

Oh well, I googled it. blame them. :P