Hi simrick. As with a lot of security apps, such as Norton and McAfee there is usually an uninstaller tool. Charter has one as normal add/remove can cause problems. Don't know how it was removed by your friend but this maybe for future reference;
Charter High Speed Security Suite Re Installation - Charter Communications
As it's XP may I suggest installing version 2.4.18.184 of Comodo as it doesn't come with av;
Download Comodo Firewall + Antivirus 3.9.95478.509 - FileHippo.com and is less intrusive and ideal for XP. (Wont work with Vista).
Used Comodo for quite some time now but think it's getting to be a tad bloated. For the last three months I've been running XP and Vista with Microsoft's own firewalls set to default, with a router firewall, and have not come to grief! Both PC's also start up faster.
AV is Avast Home, bought superantispyware and those are the only 'live' scanning programs I use. Will see how it goes but these 'firewalls' are overrated I think. Just my humble opinion of course. I have a few other programs for 'blocking' and manual scanning for malware. Anyway, good luck with repairing the machine...
