D Link Usb Wireless Adapter For Mac

I'm upgrading my Linksys modem/router and the wireless adapter for my girlfriend's iBook and could do with some recommendations. I'm currently using an old Belkin 802.11b USB adapter and I'd recently bought a Linksys modem and adapter bundle that was on offer, however no Mac drivers for the adapter. There's no mention of Mac compatibility on Belkin's site for their new G and G+ adapters and couldn't find anything for D-Link or Netgear either.
Can you still get Mac compatible wireless adapters or I'm I better going for an Airport card? The price had put me off however I found some cheap ones on eBay, the only thing is that PC World (I know but bear with me) has some good offers on routers and adapters. I suppose I could always just sell the spare adapter if I bought one.
Anyway, just wanted to see what other people's experiences are.
D Link Usb Wireless Adapter For MacAdapter

Make Offer - USB WiFi Adapter - 150Mbps 802.11n Wireless Internet Dongle for PC + Mac by NET- EDUP Dual Band AC650M Mini USB Wifi Adapter Wireless Network Card for PC Mac $10.99. Due to COVID-19, phone support services may be limited. Please use chat or email services for a faster response. Find D-Link software downloads at CNET Download.com, the most comprehensive source for safe, trusted, and spyware-free downloads on the Web. Driver for the wireless 802.11b USB adapter.