|Okay let me make it easy on you|
Best you can use Ultra Edit (best editer out there) but you want to keep it cheap so USE WORD
In Word open the textfile.
Go to EDIT - "find"
hit the button "more"and select "using wildcards"
Type in Find What: 085* and it wil give you all words starting with 085
(in Ultra Edit you can have an export to a list so you can copy and paste the list to make it easier)
I can write you an AWK script but basically it will do the same (and you need AWK but that's free)