Thank you for sharing this with the community, we are glad that this worked for you.
For other users, please keep in mind that the Intel® PRO/Wireless 3945ABG Network Connection is not supported by Microsoft Windows* 10. This adapter has reached End of Interactive Support, and Intel does not have new driver releases for it.
This workaround may or may not work in your system, and trying this or other workaround in this configuration will be at your own responsibility.
Spoke too soon, if the system is left off for extended periods the wifi adapter becomes inactive, only a reset through the "diagnose/fix" dialog by right clicking the wifi system tray icon brings it back.
Still works, but with this additional annoyance.
Will attempt this work around
Took a while to get around to implementing it, but the solution in that thread works.
Windows 10, 32 bit.
I have an older Lenovo laptop (XP, upgradeable to Vista) subsequently upgraded to W7 and W10, with the 3945ABG wireless adapter. By shutting off the power management feature through the Device Manager, it solved the problem with having to "diagnose/fix" the adapter.