How much should I charge to install windows xp s3, ms office, arobat read, avg anti virus and then diagnose the hardware for 7 laptops? (Note: They provide me all the software needed) So what is the ideal price for labor?

I have windows xp professional installed on my computer and every time when I start my computer, I have to wait for long time to computer to start up.
The windows xp black boot screen is too much delaying, the blue bar below its logo is passing around 10-15 times each time.
Is there a way to decrease its delaying? I mean to decrease that blue bar’s passing time to 2 or 3 times only?

Thanks a bunch!

Do I need to re-install all of my old hardware (the things that the computer store usually installs for you at first.) Do i have to reinstall my motherboard and processor and sound card (etc) to enable them to be compatible with windows 7? Yeah, upgrading from windows xp sucks.

Can any one please guide me steps by steps the way,how to install windows Vista and Xp (two operating systems) on single pc.I know how to install xp but i have never installed Vista ? Currently i am having Win Xp installed in my system so please guide me how to install Vista.