[texworks] Help me

[niverde at anche.no]

Help me! The command 'alt 123'  do not  produce '{' but 'i' in my 
TeXworks editor. I would like restabilish  it.----- configuration info 
-----TeXworks version : 0.4.3r858 (official)Install location : 
C:/texlive/2011/tlpkg/texworks/texworks.exeLibrary path : 
C:/Users/zaza/.texlive2011/texmf-config/texworks\pdfTeX location : 
C:/texlive/2011/bin/win32/pdftex.exeOperating system : Windows 7, 
64-bitQt4 version : 4.7.3 (build) / 4.7.3 
(runtime)------------------------------