I have pursued the issue of MathCad 14 Compatibility with W7 Professional by following the threads on the MathCad sites and on the MS site. MS W7 compatibility site indicates, under MathCad 14 compatibility, that discussions are underway in determining what it takes to consider MathCad 14 Compatible with W7, however no fixes or procedures are listed beyond that statement. It appears from the general website traffic that some people have been successful in getting MathCad 14 020 to work ok using W7. However, I plan to conduct some more research on this to find out what specific steps are necessary for my ACER 8571 Travelmate Timeline (a relatively new Acer product). One idea I had was running the Compatibility Advisor from Microsoft. So I first dowloaded to my old Gateway and ...it won't run at all, as far as I can see (program loads, screen shows up and then CPU activity goes back to normal, leaving me with nothing but a MS screen touting what the program will do for me (HA!). Typical MICROSOFT.