want to buy a system any advice?

[karaokeG]

ok looks like i should buy the holster
so i will. i am looking at the portable pc with 120GB drive
i see there are upgrades to this, (pentium-4 processor, 200GB hard drive, backup software, and the rf modulator)
so....would any one recomend these upgrades?
i would like to hook up to extra tv's that are in the places i go to.
again i am new to this so sorry if i seem ignorant i am trying to learn as i go on.
i also see vocopro is OUT, thank you for that!
i do not like wireless mics because of the people who (inhale) drink too much as we all know it can happen, start walking off with them. not good.
so when i go with hoster i would also need WHAT? that i do know i would like 2 speakers on speaker mounts 2 speakers on the floor, and also a set of speakers on the floor facing the patron singing.
you guys tell me what kind of speakers to buy and i will go with that.
what else would i need with the holster
i e-mailed them but they never got back to me yet.
again thanks for helping this "not to smart girl"