recently i got a surf@home II router wich is normally sold in bundle with somekindof time based umts rates by O2 [1]. this one comes with a simlock, so i opened that routerbox and exchanged the existing simlocked option pc-card with my pc-card (the one i bought a time ago). then i configured it to my settings and i had my base umts-router ready to run :)

[1] http://www.google.com/search?q=o2+surf@home