In Russia, Macs are used mostly by upmarket publishers. So, in terms of compatibility and service (and the prices for this!), better use PC. However, I think it would be worth to check out whether it is Mac distributor in NN (and appropriate service) or not, if yes- I think there are no reasons to switch to PC.
Concerning Internet conncetion, I don't know what is exactly for NN, but I propose it is similar as in any major city like Omsk. Here we have (in order of a decreasing of spreading/coverage):
1) Dial up V.90/V.92 - possible virtual everywhere, up to 56 kbps
2) GSM cell network with GPRS protocol- very usefull if you need mobile internet and/or to obtain an access as fast as possible
2) ADSL connection - widely spreaded, you need the permission of phone owner and check out whether there is ADSL port available on your PSTN branch
3) Broadband cable connection- very common, especially in new building/office centres. 2 types: Ethernet network (no modem needed) or coaxial cable network- cable modem needed, the 1st type is more common
4) Wi-Fi- available in some cafes and hotels
5) Long-distance wireless network - pretty expensive but the only solution if no cell/PSTN coverage does exist at the site or GPRS is too slow
6) CDMA cell network- up to 64 kbps, is replacing now with G3 network
I hope something like this goes to NN as well.
Best regards- Igor Fedyaev