In Mega Man Battle Network 5, she mines MagnoMetal in order to help her country.
In the Anime
Creamland is first seen in MegaMan NT Warrior. Lan and co. go there to help Princess Pride stop the rampaging KnightMan from destroying the firewall to Creamland's main computer system.
Creamland is to the far north of Japan, being an island nation covered in ice for most of the year. Creamland's architecture is very medieval, with a large stone castle at the center. This is Princess Pride's castle, and is also where Creamland's main computer core is kept.
Creamland in the anime is described as a northern island nation that is covered in ice for most of the year, which suggests it may be the Battle Network incarnation of Greenland.