It's possible here are the options.
1. Yes, you'll need the angle adapter and a PCMCIA WIFI CARD.
a) Orinoco Gold - they only support WEP and WPA/TKIP
b) Prism based cards. However, they require a frimware update.
2. TP-Link TL-WR 702 router in the client mode - it shoud work as well.
3. There are PCMCIA cards which allow to do it.

