In our recent review of Connectix's $150 Virtual PC we noted that Insignia Solutions had just shipped RealPC, which (like Virtual PC) offers Pentium MMX emulation, but is targeted at DOS-based gamers and includes MS-DOS 6.22 and a CD of action-oriented games for about $80. Connectix last week began competing directly with RealPC by shipping the $70 (estimated street price) Virtual PC - PC DOS, a version of Virtual PC that includes IBM's PC DOS and three sports games. RealPC and Virtual PC - PC DOS both allow you to install other operating systems; to run Windows 95 with either one you must purchase it. The upgrade to Windows 95 from MS-DOS or a previous Windows version costs $100 - the full version costs $180, if you can find it.