Page 6 of the manual for your wireless adapter recommends installing the driver software first, before inserting the card in yoru laptop, which I see you did on the second try.
I have found that when installing drivers first is recommended, it is best if there is an intervening reboot between the driver installation and hardware installation (that is, install the drivers, shut down and power off, boot back up, THEN install the hardware).
If it is helpful, the latest drivers for your card (as well as the user guide) are available at
http://www.smc.com/index.cfm?sec=Products&pg=Product-Details∏=296&site=c.
Please post back if this does not resolve your problem. If it does, then thanks in advance for any points you might assign.
-Terry