how do you know if there is malware on the computer?

What makes you think there is Malware on your computer...?

You may find this Link of interest...

http://www.reedcorner.net/mmg/

First, why do you think there is malware on your computer?

Helpful Links Regarding Virus Protection

An excellent link to read is Tom Reed's Mac Malware Guide.

Also, visit The XLab FAQs and read the FAQ on malware.

For general anti-virus protection I recommend using ClamXav.

RyanEdwardH wrote:

Well, I'm not sure if it's my internet or my computer but it seems to be taking longer to view webpages such as msn or yahoo.

There's no known malware today that would cause anything like that.

You should instead try some of these suggestions from Randy Singer "Macintosh OS X Beachballs!".