Uninstalling and reinstalling the sims 3 and ep's

Hello all,
I wanted to do a clean uninstall and reinstall of the sims 3 and expansions that I have.  I purchased the base game and some expansions and some expansions were downloaded from here.  Do I have to go through all the whole process again with the crack and ultimate fix and all that?  Thanks for any help

Thank you and yes i'll never update to 1.69

Once again I am of a different opnion:
When you have legal copies of Sims 3 expansions, by all means, install them via your legal Origin account.
Download and install missing expansion packs in .iso or .daa format via PowerIso, do not apply any cracks.
Now you can safely update via your Origin account.
Origin will treat the pirated downloads as legal.
So why not update to 1.69 ??

@Tarac, I don't think .iso apply to macs.

I think there is a topic somewhere with the same questions years ago.
But I believe it is safe to update, just install and apply the crack as normal.

I was not talking about Mac's although the original CD's work for both Mac and PC
Poweriso copies are exactly the same as original CD's
It's a pity that there seems not to be an equivalent to Poweriso in Mac-form
Unfortunately I have no Mac so cannot figure out how to apply an .iso or .daa file.
For a PC however Poweriso is magic !!

For the sims 3 in particular, mac users can convert the files into a package called .dmg.
It's simple as that for sims 3. Sims 4 is another story. lol