Windows 7 will be supported with the 9.2 release in mid 2010

Mentor Graphics works closely with customers and vendors to select the configurations we support. Migration to new operating systems and platforms requires testing and qualification to ensure stability.  While some customers are migrating to the Windows 7 platform, it is currently not supported for the PADS Flow applications. Use of Mentor Graphics software in an unsupported configuration is without support services and at your own risk.   

We recommend you remain on currently supported configurations, until support is available on Windows 7.  For our ADS product line, Windows 7 will be supported with the 9.2 release, currrently scheduled in mid 2010. We will alert you on SupportNet, in the SupportPro technical newsletter, and in product-specific Release Highlights when this release is available

WIN7用户有福了。

我现在用在windows 7 32bit下，好像没有啥特别的问题

win7x64不能安装.

安装过程会出错，多试几次还是可以的，已经帮别人做过几个板子。