Is this RS-232 shield ok for Duemilanove ?

I am looking for an RS-232 shield for a Duemilanove.

Is this suitable ? "RB-Dfr-480 RS232 Shield For Arduino". (http://www.robotshop.com/media/files/pdf/datasheet-dfr0258.pdf)

This data sheet says Compatibile with: Arduino UNO, Arduino UNO R3, Arduino Mega 1280/2560

Or any other suggestions please - suitable for purchase in UK.

Many thanks

Is this suitable ?

Yes. The Duemilanove uses the same AtMega328 as the UNO.

Many thanks. Much appreciated.