NetMeeting Romote Desktop Sharing--as name implies, it allows someone to remote control your machine if you are both using netmeeting---this is the way we used to do it before remote desktop came along, and is actually pretty slick, but set it to disable
Telephony--this one controls telephony devices on the local computer and is required for dial-up modem connectivity and some dsl...not needed if no connection to internet via these methods...set to manual
Termal services -- this one allows remote login to the your computer so if you use it, you must leave it....it is also required for fast user switching (switch user). Disable if you do not use it....
Windows Firewall/internet Connection Sharing--sounds like you can disable it
Wireless Zero Config --do you use a wireless card? If not, disable, if you do, you can still disable if your wireless card provided a different utility. In fact, it fights with some wireless card utilities. Experiment to see which works better