Maybe the only way to accomplish across all recent versions of Word would be to (in Word Basic, VBA) replace the spell check menu item and icon with one of your own choosing that would call your function which then activates the spell check. Now, with this arrangement, you can respond to various app changes such as closing and the relative progress of the spell check, and automate skipping words during the process.
This is especially handy direct from VB when your users have Office and you don.t want to buy and track a tool.
You can modify all your user cpu.s with a push UI utility that changes them up when they login to the server.
Note that this is economical in terms of price and involvement, but inter- *and* intra-app use of Office objects tends to be slow.
If you.re a MS shop, buy the Office Objects Development Kit. It won.t answer all of your questions (that.s what we.re here for!!) but pays for itself after even a few small roll outs.
Let us know, Gene