I use Google Voice. It lets my SMSes send and receive on any device. The Archos still can't do voice calls yet, but the SMS works fine.
You have to have a google voice number, or port your cell's number to google for $20, but it makes life very nice. You get Voicemails in the same Inbox, with a recording and the Voice-to-text, so I can check my Voicemails on my Archos too.
I attached the version that works for me. Set up your phone first, then when setting up the Archos, select your cell phone as the "current device."
Samsung Galaxy S3 running something close to Stock.
US HTC HD2 Running NexusHD2-ICS-4.0.3-CM9 V1.5 on NAND.
Asus Transformer running Energy Nov. 20th + CWM Touch
Archos 101IT with 1 Watt Speakers Running openAOS Multiboot. OSes= Urukdroid, CM7, Bodhi, LXDE
HTC Diamond Running Gingercherry v3. (As a remote control