basic question: reusing frame when opening Emacs file

[Peter Tury]

Hi,

Emacs opens the files always in a new frame. How to avoid this? I mean: I
would like to have just one frame unless I directly create a new one via
e.g. File > New frame. But now, if I press Enter on a file what is
associated with Emacs, a new frame is created for that file.

I use EmacsW32 (P060106) on MS Windows XP.

My Emacs files are opened by D:\Program
Files\Emacs_P060106\EmacsW32\bin\gnuclientw.exe -sqf "%1" if I press Enter
(I guess).

I have (setq gnuserv-frame (selected-frame)) in my .emacs, its value is
#<frame  *Minibuf-1* - Emacs 0x1409c00>
after a fresh start. (It doesn't help if I modify it to e.g. 
#<frame .emacs - Emacs 0x1409c00>, neither if I comment this out in my
.emacs.)

special-display-buffer-names is nil
special-display-regexps is nil
same-window-buffer-names is ("*shell*" "*mail*" "*inferior-lisp*" "*ielm*"
"*scheme*")
same-window-regexps is ("\\*rsh-[^-]*\\*\\(\\|<[0-9]*>\\)"
"\\*telnet-.*\\*\\(\\|<[0-9]+>\\)" "^\\*rlogin-.*\\*\\(\\|<[0-9]+>\\)"
"\\*info\\*\\(\\|<[0-9]+>\\)" "\\*gud-.*\\*\\(\\|<[0-9]+>\\)"
"\\`\\*Customiz.*\\*\\'")

gnuserv-reuseframe is gnuserv-find-files-frame

What to check/modify?

Thanks,
P