yeah the majority of places don't support that.
Considering the price of 2 phone lines and the extra cost from ur isp ur better off seeing about cable,dsl, or possibly isdn (that would be a touch better than the performance from combining 2 modems).
You can combine as many as you want, but most isps don't like it. Theoretically you would have a possible connection of a little over 100kbps however, if your only connecting at say 40kbps now expect a max of 80kbps. You also take up both phone lines when u do this. A couple of companies made modem specifically for that, look for 112k modem or something like that.
I use a internal pci us robitcs (hardware) modem. I can play call of duty, ut2003, warcraft 3, etc without much lag. get a hardware modem as it doesn't rely on your processor. Also get one that supports v.92, helping for games and web browsing. It doesn't boost ur dl but it does boost your upload speed. theres no satelite internet where i'm at so, me stuck with 56k for a while.
I wouldn't get satelite even if they did support it though because, it has a higher latency, so gameplay is bad, and bad weather could mean u have no internet, and its hella expensive. ISDN is probably your best bet if you want to spend the extra cash. If you get a (dual 64k lines) 128k line it will be noticeble but a 64k line won't be worth it. (No isdn for me either).
Also having a fast computer greatly helps when web browsing and playing games.
I strongly recommend us robotics. They are the best i've had. I connect at 44kbps just about any time i dial in and I live well over 3 miles from the telephone processing station. My old zoom i had would barely get 32kbps. Also for some reason OEM for a modem isn't good. I had a OEM model of my modem and it would usually connect at 38 or so. So get the retail.
Also you could try getting a petition. I think if 12 people sign it they have to run cable whereever your at and those people don't have to get the cable.
However, i don't think 12 people live down my street. Im in a swamp lol, im lucky they have phone lines back here and a paved road