Restore Default Win7 SP1 Icons

Hello!

I installed IconPackager 5.0 Trial Shareware on my Win7 Sp1.

Played with some icons packages. It's all right! No tricks, everything works smooth.

First issue:

Only one thing which makes me nervous is that I can't see nowhere an option to restore default Win7 icons.

Yes, I can see Win7 Default Icons Package in "Look & Feel>Icon Packages" Menu but I want to know if there is an option to cancel changes made by IconPackager and restore default/previous icons? Other words, is there an option to restore system default icons without installing Window 7 Package from Iconpackager? And don't say about Win Restore Point, I mean completely other thing.

What does this option "Repair Shell Icons" in Setting Menu make? Does it restore the default Win 7 or previous icon package or what?

Second issue:

If I won't buy IconPackager after trial period - what should I do before uninstalling IconPackager? Should I restore Win7 icons [using Win7 icon package from IconPackager]  and then only I can  uninstall IconPackager or I can leave a customized Icon Package on my Win7 system and uninstall IconPackage without doing any hurm to my system?

Thanks.