I have the Xonar DX on this. Microlab are made in China (by the Dutch sound engineer Peter Larsen) - great speakers for the money. Another good budget brand is Edifier (also China). I mean for music not gaming. Too bad they don't sell them everywhere.
Xonar D1 (on PCI) or DX (the same on PCIe) are much better. But you can leave the soundcard for later, get a good PSU and case. Also you can do better on those speakers if it's for music. If you get a full HD monitor better 23" not 22".