TTL to RS232 (including DTR)

Hello there, I seek a small premade piece of hw that will let me communicate with RS232. I currently use a RS232 Shifter SMD from Sparkfun, which work fine: http://www.sparkfun.com/products/449 But I also need to access the DTR line (pin 4). I could use one of the digital pins for this purpose. It just have to be converted to +(10-12)V. (Hence the "Shifter".) I'm not very good with soldering, so I'd prefere something simple, like the one from Sparkfun. Does anyone know a "bigger" RS232 Shifter? Or something else that's simple enough to help me?

I've found this one: http://fcelectronics...or-avrpicarmgps But it's 5V. You think that will work with the Netduinos?

Illishar, It might work. Here's the datasheet: http://datasheets.ma...X220-MAX249.pdf I don't see a section for min/max voltages of the TTL signal, but the one that looks closest shows that 2V is the minimum "logic high" signal...so unless I'm completely misreading it, it should work. Also, the Netduino is 5VDC tolerant on its digital pins...so the incoming 5V signal is fine. Another similar option: http://fcelectronics...or-avrpicarmgps Chris