Good, affordable verilog simulator

Hi,
  I was able to make Xilinx Edition ModelSim(free) work both for
verilog and vhdl. Follow the below procedure.

 What you can do is first install
vhdl version, then copy vhdl folder  from
C:\Modeltech_xe_starter\xilinx\vhdl
to different location. Then uninstall the modelsim and again install
this time for verilog, this time you have
C:\Modeltech_xe_starter\xilinx\verilog
Now copy the vhdl from previous location to this location
C:\Modeltech_xe_starter\xilinx\
If you now open the modelsim you have both libraries.

Thanks
rao

"Mentor Graphics will not allow an inexpensive license switch from our
present VHDL to the verilog"
Try asking if they can trade a verilog license for a vhdl license that
you can spare for the time being.