My Dream Machine, a 2005 T60 2623-- bought used a year ago, but not from anyone here

-- has blow out its modem connection -- AGAIN -- for the
third time and now is out of warranty. In April Harvard Tech loaded the correct modem (and its still there, it just won't engage) but that plus-- 1. no warranty, 2. The IE browser became a "white page" only a while ago -- caput -- and 3. the OS is a copy! -- (yes, I bought it before Bill posted that wise advice -- stupid me) -- all this makes me think I shouldn't invest anymore time or money in it and should move on. I'm "in-between jobs" so money is a major problem.
Do you think I should:
(1) Try one more repair, (2) use my backup 2005 Dell Latitude D810 clunker until the recession turns, or (3) sell it on Ebay and buy a new
very used T from someone here -- and wait for the right one. Bill, do you have anything???
I'll post a quick request in the marketplace but just wondered what "T"eophiles think here. Any advice, greatly appreciated. Also, does anyone have any experience with this modem problem, and could the bootleg OS be any good?
Many thanks,
Julia
And yes, I'm backing up all my documents!!!