Ok, if you think about upgrade from Debian etch to Lenny and you computer use an INPROCOMM IPN2220 wireless adapter then I suggest you stay with Etch or simply change you old PC.

You can find many bugs report in Ubuntu about this topic, in sort windows driver inside ndiswrapper 1.53 and kernel > 2.6.23 stop working.

I've installed debian lenny with 2.6.26 kernel and then added etch repository to my lenny then installed back 2.6.18 and ndiswrapper 1.28.

This is not good, hope someone will fix this.