A Don't worry, you're almost certainly making faster connections now than you were before loading the new .inf file (the driver installation file that tells Windows about your modem's capabilities). Even though Dial-Up Networking previously reported a connection speed of 115.2Kbit/sec, common sense dictates that a 28.8Kbit/sec modem can't really connect at such a high speed. What you saw was a quirk of your old .inf file, which for some reason decided to report the DTE speed -- the rate of the connection between your modem and PC. The actual connection speed was probably 28.8Kbit/sec or slower.
It's worth noting that .inf files aren't drivers and don't themselves upgrade your modem to a faster speed. The situation you're in occurs when you install a 33.6Kbit/sec modem under the original August 1995 version of Windows 95 (Version 4.00.950) or upgrade your 28.8Kbit/sec modem's firmware to support 33.6Kbit/sec transmissions. Windows 95 shipped with few .inf files for 33.6Kbit/sec modems, so Plug and Play misidentifies your unit as a 28.8Kbit/sec model. Installing an updated .inf file corrects this error.
- Lincoln Spector