Hello deedee
Sorry for the delay in replying to your post!
There are many things that can cause a PC to run really slowly...
Do you know how old your PC is? Do you know which CPU it has in it? Do you know how much RAM you have installed?
Click start/all programs/accessories/system tools/system information
In the window that opens copy and paste what it lists in the right hand window and post it back here or mail it to us using our form
here and we can tell you if you should look at adding more RAM or indeed purchasing a new machine....Transferring all the files off can be a little confusing....Microsoft created a tool that you can use to do it if you know your way around your PC ok....Look here for a detailed guide on how to do it
http://technet.microsoft.com/en-us/library/bb457074.aspx If this looks a bit daunting...Let us do it for you!
Hope this helps!