From… http://www.dm.ufscar.br/~sadao/winapps/tex/sourcespecials.html#TexnicCenter.

TEXEDIT settings On MikTex, change the miktex.ini as

[Tex]
Editor="c:\program files\TeXnicCenter\texcntr.exe" /ddecmd "[goto('%f', '%l')]"

But, I can't find a miktex.ini file.