Hello friendz,
I posted about 3 or 4 questions at this forum but i didnt get any useful response. Can anyone tell me if there is any forum where there are true linux gurus so that they can answer questions instead of members like me who are new to linux? Till anyone tells me the forum, I have only one choice i.e. this forum, so here is the question:
I have a Connexant Soft56K HSF modem and it worked perfectly fine in WinXP and WinME until I installed drivers for Linux from Linuxant.com. Now I am able to connect at 36Kbps and not more than that even in WinXP and WinME whereas I havent done anything with their drivers, The same drivers were working perfectly fine until I installed and connected through Linux.
I thought that this might be the phone line problem, and brought an Intel modem from my friend and it worked just fine at more than 44Kbps on the same phone line.
Can anyone please help me.

Linuxant sells their drivers. If you install them without buying them then they limit themselves the modem traffic. Now, I did a little COM programming myself and I now that if you want to limit a modem to a certain rate all you have to do is set the COM properties to the rate you want. But from what I observed, When restarting my computer the COM resets. Maybe its because of my motherboard, maybe yours keeps whatever changes has received. If this is the case then it is obvious why your friend's modem didn't work too, it gets data from the same COM even if it is a different modem.

My sugestion is to reset you motherboard chips. This is done by opening your computer, and removing the motherboard's battery for 1 or two seconds. Then put the battery back and restart. Everything will be modified, even your PC clock, but you won't lose any data from your harddisk. So just set your clock again. The COM will also be reset. Then reinstall the Windows drivers. This time, they should work. If they don't then I was wrong.

Search for other modem related information under Linux can be found on www.linmodems.org

It is very nice of you to reply, I really appreciate this. I think you skiped a little bit from my post because I wrote that my friend's modem worked perfeclty all right, which means that my COM port doest not have any problems. Moreover I changed COM port used by the modem from COM3 to COM4 but it didn't work either. Your advice will be really helpful to me. Thanlyou

You're modem might have taken the configurations of the driver itself. Try running your modem at your friend's computer. If it happened than your modem should also work slower at your friends home. Also try reading the Linuxmodem-HowTo. You should be able to find it on www.tldp.org.
Best of wishes