It is possible to not installing a particular update ?

[zzzzaaa]

It is possible to not installing some update I don't want on my computer like KB971033 ?

Also, is it possible to delete a particular update already installed... ?

Or is it simply possible to download update but not install them ?

[aker]

It is possible to not installing some update I don't want on my computer like KB971033 ?

Sure, but that is not the intention of wsusou.

Also, is it possible to delete a particular update already installed... ?

Go to your control panel, goto "List installed updates" and uninstall the one, you want to remove.

Or is it simply possible to download update but not install them ?

Just use UpdateGenerator.

Just one question: You know, that this is a support forum for the software "WSUS Offline Update" and nothing else?