Amy... you possibly have to much in your startup...
to take some items out... you go to start/run ... type in msconfig & click ok... go to startup & take the checks out of things you do not need to load as soon as you reboot. for a list of things you will see in your startup menu.... open this URL & go thru the items you have one at a time removing checks where you can.
http://www.pacs-portal.co.uk/startup_pages/startup_full.htm#D
after you do that click apply & ok...then you will be prompted to reboot
when you get back to the desktop a window will show you are using selective startup ... click the box before you click OK... so it will stop loading everytime you reboot.
then you need to run a virus scan... hopefully you have oneif not let me know
also a spyware scan
ad-aware is what we use mostly... you can get a download of that at
http://www.lavasoftusa.com
then when you have done all this and everything is normal you need to run a full maintenance program... diskclean up .. scandisk.. & defrag
for best results in maintenance... set up maintenance... to run in while in safe mode.
Hope this helps