hello I just baught NWN 2 complete I keep getting the message when I try to install its missing the installer or installer parts..if anyone can fix this I be happy.im new to this series..

Did you download all the files?
(assuming windows) there should be an .exe and a few .bin files - they all need to be downloaded and put in the same folder - then running the .exe should work.
(If another OS - it's similar, I guess - multiple files to download).

I have win 7.it got 1 of 3 2of3 and 3 of 3..and game goodies are manuals wallpaper sound tracks avators and artwork.do I run it or save it?

Just to check -are you using gog-Galaxy? (in which case I have no idea).

If not - first you need to save all three parts to your local drive (one .exe, two .bin) in the same folder - then run the .exe (which also reads the .bin files).
If you've done this and it isn't working - check the file-size of the three files to see if you got a complete download (sometimes an incomplete download happens but the computer sees it as the whole file - in which case, you need to re-download).

Make sure you have the two .bin files.
Some browsers change the file extension to .rar when you download them, if so just rename them to .bin.