I have a (I think) mundo or whatever. It pops a message called Errorsafe and it sometimes randomly navigates my computer to its webpage from whatever it is doing. Any help is appreciated. Thanks!

your computer is infected with adware/spyware..
if you post a hijackthis log, someone on the forums can analyze it and help you

might also be a good idea to download spyware/adware removal programs, such as Spybot 1.5, or Ad-Aware 2007
i use these programs, i run a scan every once in awhile. they are good to have

As unsober said you should post a HijackThis log, however you should first read and follow as much as possible the spyware removal guide by rridgely then post your log in the appropriate forum area for posting logs.