A bluetooth dongle of course! — I got mine from DX about 10 months ago (still working great by the way!)
I thought I could mention it and give out the link for anyone interested in buying it. Mine came with a blue LED (just power, not activity) and overall it’s been working nicely ever since I got it.
I wish I had BlueSoleil or a similar application, since XP’s BT functionality is horrid. What I do on a pinch is type “fsquirt -receive” on the console, which brings up the receive dialog for bluetooth on XP.
Anyway for under $2 US Dollars you can get this nice BT dongle, it only takes a couple weeks for the shipping (which is free by the way) — No third-party drivers needed either on XP. More…