Guys, if I may interject a simple comment here:
No offence meant, but building a RS232 interface is not exactaly simple, and I do think that we should be concentrating on the focus of this design, instead of nice extra details.
I think the hardest thing to do is get the temp sensor interfaced, why not work on that?
__________________
Signing out...
Yo-DUH_87
If it works, fix it until it's broke!
Then, after it's broke, add duct tape!
Affordable webhosting!