How I can connect a regular phone on my cell phone?

I'm in love with the idea of mobile Hulger – seem to mobile retro and plug directly into your cell phone. I have a Blackberry Pearl and has a mini-USB connector. Is there some sort of mini-USB converter to plug your I could use to use the phones I have in my house? This would be so nice as it would be much more comfortable and reduce my exposure to cell phone radiation. I think I'll get a Novophone. Much less expensive than a Hulger.

if no such device have daydeal.com