little help plz :(

hello :]
i wanted to do a programme its about picking some text
and searching for specificke words...
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i choose the words ! the user only gets to choose the txt file
and it searches for the word ,,, (by pressing a button)
i tried to search for some source code like this and i didnt find any help..

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and if i would want to programme a remote administration tool , from where can i start?
:ehh:

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th programme is only about tha the user gets to pick a document file
and then press scan ... for the words that i programmed it to search for

and if it gets the words it will just right the line of the word
and the word !