I just bought a D-link wireless router (DL-624+), it connects with iMac (wired) & iBook (802.b) & ADSL modem. My question is : 1) How fast can i transfer files from iMac to iBook? Coz i got 0.5mb per second. Is that normal or i can make it faster? 2) How can i secure my wireless connection? Thankz in advance.