http://www.ema-eda.com/UnisonPromo.html Start with creating the CDS_LICENSE_FILE environment variable with as value 5280@yourhostname . Open/Edit our license.dat and update the "flexhostname" field to reflect your real net machine hostname. Then, launch setup and choose choose "Setup licensing", point to our license.dat and press "Next" several time. Ignore the license parsing nagbox which is a nice fake one, and answer yes when prompted to install products. At the "Control File Location" dialog, just clear up the text box (BLANK) and then press next. Now you have to choose products to install and finally press next several times After a reboot you will be done, enjoy this sweet cd note: Unison ULtra includes the whole OrCAD base level products. If you wish to have the real full bundle you may select this as products : OrCAD Capture CIS OrCAD Capture CIS Option PSpice A/D PSpice OPtimizer PSpice Advanced Analysis OrCAD Layout Plus SPECCTRA 6U for OrCAD If you want to use specctra in autoplacer mode you need to get psd+psd license, we on purpose did not include specctra autoplacer because it is not supposed to be enabled within OrCAD