A ThinkPad T23's (and a ThinkPad X20's) XWLAN 3.10 cannot see the installed GenMAC adapter (built-in Intel 2200BG MiniPCI) anymore,
If you are saying that it did work, but no longer works (or even if it never worked), it is very likely that you are running out of some system resource. Shared memory space is the most likely thing to be used up by other things (Firefox, Thunderbird, and Seamonkey, are the most likely to use too much shared memory space, but other things can do it too). In fact, that seems to be one of the main reasons why GENMAC doesn't work with more modern windows drivers. The other main reason is that newer drivers use APIs that GENMAC doesn't know about.
Some things to try (but no guarantees):
- Put "DLLBASING=OFF" near the top of CONFIG.SYS.
- Change "VIRTUALADDRESS=" to 3072.
- Find an older windows driver, and substitute that in the GENMAC setup. Older drivers usually don't need as many resources, but often don't exist.
- Set some programs to use high shared memory space (but there can be problems with that, if you ever close the programs).
Some experimenting may be required to find a working combination (which may not exist).
An alternative, is to use an external WiFi adapter. There are a number of them available, and they can be useful for other things. I use a D-Link 506L, and it works well (once you figure out how to use it), but is probably obsolete by now.