For several years I was able to pick up tips from the Avsim forum and change settings in various .cfg files to modify how my planes flew. Now, for some reason, I can get into the MS flight sim files in the program files section off the C: drive but when I try to open a particular .cfg file a window comes up asking me what program I want to use to open the file. I don't know what program(s) opens the .cfg files. Can anyone tell me what to do here so I can again add some of the modifications that were so helpful with my old Win 98SE system?Buzz Jameson

For several years I was able to pick up tips from the Avsim forum and change settings in various .cfg files to modify how my planes flew. Now, for some reason, I can get into the MS flight sim files in the program files section off the C: drive but when I try to open a particular .cfg file a window comes up asking me what program I want to use to open the file. I don't know what program(s) opens the .cfg files. Can anyone tell me what to do here so I can again add some of the modifications that were so helpful with my old Win 98SE system?Buzz Jameson

Hellochoose notepad

I don't know what program(s) opens the .cfg files.

the FS9.cfg file is opened using notpad.be sure to make a backup before making any changes.--

Buzz,Sounds like you are doing a right click on file name (cfg) for opening it. The aircraft.cfg file will open AUTOMATICALLY with notepad when you do a DBL CLICK on file name (cfg). No need to do 'Opens With' as by default any '*.cfg' file will open with notepad when dbl clicked.As a side note: On working with aircraft.cfg. When you make changes you only have to do a 'SAVE' and XP (thus notepad) will auto overwrite that particular aircraft.cfg (at it's present/original location). No need to browse to it, in other words. Since all the different aircraft have simular named 'aircraft.cfg' then one wonders how XP and notepad know which one to overwrite on 'Save'. Trust it. It does it well. This comes in handy when you work with 2 cfgs side by side to use one to add/edit the other. XP (and notepad) will know which is which and if you do 'Save' to either one it will know which one to overwrite.Therefore DON'T do 'Save As' operation unless you plan to save with a different name (such as 'aircraft.cfg.new' or 'aircraft2.cfg', which will require you to browse to loaction (folder) you want to overwrite) or to save to a different location (for whatever reason).At any rate a 'Save As' operation will require you do a browse to the location, then pick which file the 'Save As' operation will overwrite. It's safer, then, to just do 'Save' and let XP and notepad handle the details. But if you get cfg from one location (folder) and want to apply to another location (folder) you HAVE to do a 'Save As' and browse to that different folder, click on file to overwrite, and then click 'Save'.If you make any changes to cfg, even if you 'un-do' them, then try to 'X' out of notepad, notepad KNOWS there were 'changes' and will ask if you want to Save your 'changes'. I you don't want changes to be saved, then you can say 'Cancel' and the cfg will remain as it was when you opened it. If you just fogot to do the 'Save', then it's ok to click 'Save' when asked. Hope this helps (even if it a lot of boreing details). Nothing is more painful as overwriting a modified cfg with the wrong cfg (ruining your work) as there is no way to recover the overwritten cfg. So when you get cfg where you want it, make a 'copy of'.CBNapamule