From MWSU Graduate School Policy Portal
NOTE: This requirement has been suspended until the Fall of 2012. Only the Human Factors and Usability Testing program currently requires the GRE.
The GRE General Test is required for all MWSU graduate programs. Some programs require it before admission, and other simply require it to be completed by the end of the first semester. Non degree seeking students do not need to take the GRE.
Western's GRE institution code is 1434. Using this code will help ensure that your scores get to the admissions office.
You can sign up to take the test at ets.org.