Okay, first @ Dusty: Thanks for helping. You tried MBRWiz - that's good, tells me it does as expected with you. I'd be interested in the steps you used next to activate one of the switches - say, </List> where it will give you a list of MBR entries. I think that's where the roadblock is for me.
I should mention that, currently, the path to MBRWiz is C:\Utility\MBRWiz.exe per a suggestion to keep the path simple. There are several other small, CLI exes in there, too.
Probably, the best thing would be for us to just forget the whole environment variable thing for the moment - simply dragging the exe to the command cursor gives the best results right now. These aren't apps that'll be used very often. Command is not something I see myself ever needing much. Read: no old DOS apps or games, no scripts, no batch etc. This started purely out of interest - thought I'd pursue why double-clicking these kind of exes gave such unexpected results.
So why MBRWiz?? It's just an example. I resized a partition recently (system, unfortunately) with a program that corrupted the partition tables and XP wouldn't boot. I was able to correct that with another nice little app but now I thought that it was important to know more about the MBR/partition tables than I did.
But here we are, back at XP command prompt, I've dragged MBRWiz.exe to the prompt, it opens the list of options..."Press any key for remaining options", after displaying next options, I'm sitting at a prompt that's at the end of <C:\Documents and Settings\UserName.
Now, here's where cmd baffles me: am I already "outside" of MBRWiz "program"? What's next to command a switch to activate? If it's something simple, like enter "MBRWiz /List", I tried that days ago, got the "MBRWiz is not recognized..."
@Salmon Trout: Thanks for offering your assistance, too. Sorry, didn't understand the "make that folder the current one" term in your instruction.
As far as the provided link, yeah, been there. The info there was what piqued my interest in the utility at the start. The switches listed there are the ones I'm referring to here. Just can't make them work.
@ Dusty - your next post: are those instructions dependant at all on where MBRWiz is? It looks as though MBRWiz.exe would have to be in the system32 folder. Have I got that right? Anyway, followed your instructions, got a nice, big cmd window flashing at C:\WINDOWS with a mbrwiz title bar. Nothing worked from there. Tried again with a copy of MBRWiz.exe in the system32 folder, typed <MBRWiz /List> and EUREKA! Finally! It's taken a long time to get to this point. If there are other methods, I don't need 'em.
This seems to be a reasonably simple way to do this - odd that no one's mentioned it up to now. None of the tutorials that I went through mentioned this method. It seems that the location of the exe is of prime importance. I spent a lot of time on "paths" in Environment Variables and AppPaths in the registry - all great info but still, the switches wouldn't work. And, as it turns out, I was entering them just as I did now. I still don't know what that was all about. Doesn't matter now.
Thank you, thank you. I'll still be interested in any comments you'd care to make.