The thing that kills me is once upon a time I was able to run SFC and TS at the same time without hickups on dial-up. I used SurfBest as my gaming ISP at the time in addition to CompuServe though. Nowadays all I have is CompuServe 'cuz our SurfBest account was cancelled while I was at school. I might have to see about signin' up with SurfBest again. SurfBest seemed to be less sluggish.
You might limit the bandwidth Teamspeak uses. Go to Settings/options/bandwidth and dial it down to somewhere between 6 and 15, and see if the voice quality is acceptable. If you hear robut-like voices, who cares? If you connect at around 45KB/s, and only use 1-2 KB/s for voice, you might be in a better situation. Since most of us are on broadband these days, we open the pipe to the max, but I remember from the old days working to make every bit of bandwidth count.
You might test your avaliable bandwidth through your ISP.
http://www.pcpitstop.com/internet/default.asphttp://us.mcafee.com/root/speedometer/default.asp..and see what they report as your connect speed.
Also, some references on faster dial-up:
http://www.bellevuelinux.org/faster_dial-up.htmlhttp://www.softpedia.com/get/Tweak/Network-Tweak/TCP-Optimizer.shtmlhttp://www.tweakmaster.com/kb/qa0021.phpYou MTU is especially important. Do some research to see what is best for your dial-up situation.
Also, you might call your customer support and explain you need the best and fastest possible connection for gaming, and ask them if they have any ideas. They might give you a series of numbers to call that may help, or other hints. If you dont get a good answer on the first call, try again. Eventually you will get a sympathetic gamer who will have ideas for you. .
Dial-up ISP's have a bank of phone numbers that connect to a bank of modems. The newer modems are at the front of the line, and the older ones are toward the end. So if you are stuck with an older modem with a marginal connection, hang up and try again. Somebody on a newer modem may disconect, and you may finally get a good modem. Prime time is 6 PM to 11 PM, so if you know you will be gaming at those times, you might try and connect before 5 PM, get on the dynaverse, and get behind the lines until you are ready to play.
Believe it or not, I had good experience running OP and a chat client on NetZero and Juno about three years ago. I was away from home for a short time, and had to use dial-up to connect, and tried a few free services. So you might try some free ISP's and see how it goes. If you still have problems after dialing down the Teamspeak bandwidth, try a free ISP.
Good luck!