These instructions are just a slight modification to the instructions for installing the 2.4.20 kernel from source. When you finish you should be able to use your 3Com Homeconnect USB Netcam with gnomemeeting, xawtv, and possibly other applications.
Let us begin:
Start by looking over the kernel from source document and performing the instructions in it until you reach the "make xconfig" step at which point return back to this document and perform the following steps:
# cd ..
# wget http://unc.dl.sourceforge.net/sourceforge/homeconnectusb/vicam_patch.gz
# gunzip vicam_patch.gz
# cd linux
# patch -p1 < ../vicam_patch