Hello, for a while now I´ve been trying to figure out, how to edit objects from the Sims 3 Store with no luck.
I have looked all over the internet and found nothing.
All I want to do it edit the "Overachieving Counter" to only have doors, so its more realistic if i put a sink on it.
I cant seem to figure out how to work with milkshape or blender or TSRW.
I would love some help. TwT

The Store packs are encrypted, which needs to be removed in order to make any changes to them. For that, you need a tool called S3RC by Pescado.
You'll also want to convert the .sims3pack to .package using Delphy's Multi-Installer afterwards.

When those two steps are done, it's functionally the same as any CC package and you can follow any CC creation tutorials on how to achieve the edits that you want.

Thank you so much! Once I find time, I will try it out!!

@Cozy_Feelings Exactly what Cardinal said. If you'd like a step-by-step guide, here's a link to my thread that I made on the process!

http://www.modthesims.info/showthread.php?t=665108