Toolserver:~luxo/contributions/contributions.php

Global user contributions is a contributions-tool, which search contributions for a given username or an IP address in all wikis.

Arguments of tool: 
 * lang: Tool-language:, , , , , , , , , , , ,
 * user: Username or IP address
 * blocks: Show blocks true/false
 * fullblocklog: Show full block log true/false

Translate
Go to http://tools.wikimedia.de/~luxo/contributions/translator/translator.php and follow the instructions - it's very simple!