iPhone Hotspot Tethering

[StealthM0de]

Good evening folks,
I will type in point form to save some time.

My sister and I share a linksys router on seperate laptops.
Her eBay account is currently suspended indefinitely.
I have created a stealth account at a friends, have not logged in on my computer yet because of IP issues conflicting with hers.

I am wondering what are my options?
Is there some way I can have a seperate IP from her? (she still logs onto her account to buy)
I have an iPhone 4..tethering?

Thanks!

[unkown5454]

Dangerous situation no doubt. Stay away from the home network. Not worth the hassle or confusion of getting others involved. Either tether a phone or get a MiFi box.