[texworks] Message from TeXworks user

[Cheng, Yuanshan]

Hi,
Could you please help me with "adding " package{array} in TEXlive?
I have no idea how to do that.
Best if you can provide screenshots.
Thank

----- configuration info -----
TeXworks version : 0.4.3r858 (official)
Install location : C:/texlive/2011/tlpkg/texworks/texworks.exe
Library path     : C:/Users/yuacheng/.texlive2011/texmf-config/texworks\
pdfTeX location  : C:/texlive/2011/bin/win32/pdftex.exe
Operating system : Windows 7 Service Pack 1, 32-bit
Qt4 version      : 4.7.3 (build) / 4.7.3 (runtime)
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