Hi Mike,
The first is from your old modem as you already said, so you can remove it. The second is a spyware program, so definitely remove it, and the third is the system tray app for an S3 video card, so it's up to you if you want to leave it (if you are using an S3 video card that is). Also, download and install Ad-Aware to remove any other spyware programs that might be on your system.
http://www.lavasoftusa.com/
Hope that helps.