Bit of a late reply this, but there is a fantastic piece of software that will definitely run on your N70 called wwigo (pronounced vigo). It's free, works via bluetooth and runs remarkably well. Check the website here:
http://www.motvik.com/ I have used it with my N70 and N95 and it runs perfectly on both. One of the things we used it for was keeping an eye on our newborn child. I would start the app running on PC & phone, put the phone in the baby's cot and we could keep an eye on him from downstairs!