The 2004 model matches you spec & decals, see here 2004 Rocky Mountain Vertex 30 - BikePedia

The forks are the EXR Comp model, put this into Google, and you have lots of info, MTBR is very good researching older forks like this, sa in this thread, which includes links to the service manuals Marzocchi EXR Comp- Mtbr.com.

With Bombers (the EXR are one of a lot of versions of this), there isn't too much to go wrong on them, the seals will wear out in time (the same as all MTB forks) but the basic design is solid, and easy to user service.