The card included in the Cubasis Project Pack is mfg. by EGO-SYS. They do not market the product under their name & do not support it.
Since the Project Card does not utilize the Windows mixer application, I am not sure you can use it for everyday apps. (which do not allow the selection of an output device). I use mine in conjunction with a Yamaha YMF754 for everyday use and it seems to work fine.
Be aware, though, that the drivers that came with the card are the only ones you will ever get. Steinberg does not intend to support it in the future. It does not work in Windows 2000 with the existing drivers and I have not been able to get one iota of tech support or questions answered regarding it.