Problem trying to get first simulation to run on Modelsim

Hey Guys,
I followed the “help tutorials” etc and it looks like I missed something.
It appears I’m missing the okFPsim_ver comlied code from your first.do file.

from the first.do

This is a Modelsim simulation script.

To use:

+ Start Modelsim

+ At the command-line, CD to the directory where this file is.

+ Type: “do thisfilename.do”

Source files and testfixture

vlib work
vlog First_tf.v
vlog First.v
vsim -L okFPsim_ver -L unisims_ver -t ps FIRST_TEST -novopt +acc

All in the same directory I have:
E:\xilinx13\projects\ads8365\sim_model_6_6\sim
first.do
First.v
First_tf.v
okLibrary.v
okHostCalls.v

on the Modelsim command line I get:
do first.do

** Warning: (vlib-34) Library already exists at “work”.

Model Technology ModelSim SE vlog 6.6d Compiler 2010.11 Nov 1 2010

– Compiling module FIRST_TEST

Top level modules:

FIRST_TEST

Model Technology ModelSim SE vlog 6.6d Compiler 2010.11 Nov 1 2010

– Compiling module First

Top level modules:

First

vsim +acc -L okFPsim_ver -L unisims_ver -t ps -novopt FIRST_TEST

** Warning: (vsim-8690) Ignoring plusarg ‘+acc’ with -novopt in effect.

Refreshing E:\xilinx13\projects\ads8365\sim_model_6_6\sim\work.FIRST_TEST

Loading work.FIRST_TEST

** Error: (vsim-19) Failed to access library ‘okFPsim_ver’ at “okFPsim_ver”.

No such file or directory. (errno = ENOENT)

What am I missing?
-Thanks