Ebay tracking/router??

[dawnmax]

I have spent tons of hours on this forum, so please forgive me if I ask an obvious question, I didn't grow up during a tech savy time. (in my 50's)

I understand the IP changing to not flag EB or PP, but everyone keeps talking about routers, I do understand what they are, my question is, I have a dynamic IP address, change it between accounts, and user on my desktop, but can ebay track me otherwise? Do they have more info about my computer (ie router, wep key? other computers on wireless using a different IP??, computers 'user name') Also how about this info when I go to my systems detail page:
Model: 2701HG-B Gateway
Serial Number: 460819017439
Hardware Version: 2700-100594-004
Software Version: 5.29.109.11
Key Code: 525Z-25Z4-6266-22AS-B2DC

Can ebay see all this through cookies?

I just can't figure this out, I don't know enough about computers to even understand some of the posts language.

Any help would be greatly appreciated.

[rsot]

Welcome dawnmax.

From the current workings of eb ay, at present they would not see all your version numbers and key code (I would recommend someone editing this info stat shrug - key code can be used for other stuff by people I think)...

So make sure your IP is different all the time and use different user accounts to keep eb ay stuff separate. I would not worry about computer user name or other computers that are NOT logged in to eb ay.

All the best.