Do you use clean installer to install your Sims2Packs?
http://sims2pack.modthesims2.com/You can install each one into your game by double clicking on the
sims2pack-then locate the package file in your downloads folder- but be
warned that it'll be named a combination of letters and numbers, with no
indication of what the package file actually is. Copy/paste that package
into a new folder then repeat with all of the other murals/walls you want
to upload, compress(zip or RAR) it then upload it.
If your downloads folder is a mess and you're concerned that you won't be
able to find the files, I suggest the following method.
This is really easy- but can also be really tedious if you have a lot of murals
that you want to do.
Double click on the sims2pack to install it. Click OK
Once the next prompt comes up- uncheck default installation.
That will activate the 'select installation destination' pull down menu
(it should be set to Downloads by default) from the pull down menu select
browse. Once the browse prompt appears, select the make new folder option
(should be a button on the lower left hand corner of the prompt window).
Name your new folder and click ok. That changed your installation path
and will bring you back to the previous prompt window. Click on the install
button and clean installer will install the file into the new folder that you
created. You can take the time to rename each file here.
With each new sims2pack that you install- you'll have to repeat the steps
above- only you won't need to create a new folder, just browse to the one
you already created and install each new file there.
When you're done compress (zip or RAR) the entire folder and it's ready for
uploading.