いつもお世話になっております。

Excite翻訳: I am always indebted.
@nifty翻訳: I have always been indebted.
Babel Fish: You have taken care always.
Google翻訳: Is always a great help to me.
Yahoo!翻訳: Thank you for your cooperation.
OCN翻訳: It always is under care.
Windows Live Translator: always indebted.