I'm having issues with certain websites, where they crash Konqueror as soon as they load and I'd like to block them from even being loaded by my computer. Do I need a whole separate filter program or is there something built into KDE that will do this in a simple manner?

you may edit your /etc/hosts file, in order to block the sites you don't want.

it's something similar to this:

127.0.0.1 localhost

0.0.0.0 downloads.aaa1screensavers.com #[Bargin Buddy]
0.0.0.0 abcsearch.com
0.0.0.0 admin.abcsearch.com
0.0.0.0 www3.abcsearch.com #[Browseraid]
0.0.0.0 www.abcsearch.com
0.0.0.0 abc517.net #[Trojan.Mitglieder.H]...

i am not in front of my suse box right now, you only have to add the offending websites there (i have blocked more than a 1000 ad-sites, malware sites, etc.

or, use firefox instead of konqueror

hope this info helps
omar