Is there someone who knows the details?

 

 
I want to make my home ADSL wireless! I signed up for it ages ago. These days, I’ve been tidying up my room and thinking about going wireless
to clean things up and also get faster connection speeds at a lower cost. But everywhere I look, it seems like I have to rent a router—
is that just how it works? Since a router costs just over ten thousand yen, it would be cheaper to buy one . . .
Or could I change the settings and use a wireless LAN that I bought myself to go wireless??
1) Providers that don’t require equipment rental
2) Connection speeds of 3–8 Mbps
Hmm, hmm . . .