I'm very sorry, but I do not understand your question.
Most Poser Products are zip files, which must be unzipped into any runtime before you can use them.

Object files, such as those from Sketch up would be imported as wavefront Objects via File > Import > WaveFront Object. It is perfectly usable as is.

If you intend this to be a prop, you would select it and choose Edit > Memorize > Object then choose the appropriate options.... and click the PLUS sign at the bottom of an appropriate folder in your Props Library Window and save it.

If you want it to be a character, you'd Click Edit > Memorize > Figure and it will go to the New Figures Folder in Characters in the POSER 11Content Runtime. All you supply here is the name.

If you are using the default install, you probably need to be logged on as administration so you can write to the protected folders.

;>

Andy!