Welcome to the scene.
You can use the new hdloader with you current games list/hdd... do you have the memory card exploit running? You can simply download the new, patched hdloader... you own it so it'd be legal to download. But you need the exploit to run the updated hdl. You can install the exploit yourself or I can do it for you
And you could connect your hdd via usb enclosure.... but having a laptop you can't direct connect the hdd... a laptop hdd is.... well really small... not sure of the exact size while while a stardard hdd (like in the ps2) is 3.5".... your laptop most likly doesn't have a second hdd slot anyway.
v7 NTSC PS2 Duo2 SE