http://bugs.winehq.org/show_bug.cgi?id=3293
------- Additional Comments From leon_fraitak@mail.ru 2005-27-10 04:35 ------- How to fix using no native DLLs: download the Mozilla ActiveX control from Transgaming: http://downloads.transgaming.com/mozilla_control_downloads/mozcontrol.tgz
extract it and run regsvr32 mozctlx.dll in the directory you extracted it to.
Now Steam starts without the native DLLs.