Not clueless, too busy to search. Could you fill in me on where else to search, because I have searched every site I know and google for .package format and the sites have them with .sims3pack. If there is a program which turns .sims3pack to .package tell me where to find it rather than offering bullsh*t as an answer.
Type what you're looking for, then Google it. That's not a bullshit answer, it's the truth. I did it. I found the exact program you're looking for. I've been using for almost a year now. You also need to 'Decrapify' the sim3packs before you can use them. That requires another program, made by the same creator.
The MATY moderators and contributers make tutorials with links on what to do in almost every modded/patched Sims 3 related scenario. All you need to do is search and follow instructions. What are you doing that makes you so busy that you can't type your issue and click on a search button? Why are there so many of you asking the same type of questions, and what justifies you to be a jerk about it?
(I apologize moderators, if this is the wrong place to post this.)