Affiliate Linking Toolbar - adds affiliate link to every site

HELP.

I am looking for a tool, i don't know if this may be available for free somewhere, or if available at all? Here's what i need.

I need to create a tool bar button that can, once downloaded, automatically add my affiliate id to the url of the site they are shopping on via skim links, shareasale, or amazon, etc. I've seen something like this on igive.com. Any suggestions?

My goal is to get people to download the tool bar, then shop at amazon and other online stores WITHOUT having to click the tool every time they shop to apply my affiliate id.

Need clarification? does that make sense? help please.

You're basically asking for cookie stuffing. Not the right place for that stuff.
I also strongly recommend against that for many reasons:
1. Your account will get banned from those companies since they all don't allow such activity.
2. You're also stealing money from other IMers, those users could land on those pages from someone else's ref link but you replace it with yours.

In my opinion, create a shopping saving/comparison toolbar or browser plugin. More legitimate and people actually land to those merchants through your product. People can view and compare products within your tool.