Help please for an Acer Aspire with Windows Vista. Last week I could not get onto the internet via wireless. A computer expert (?) came round and couldn't find the problem,so I now get it non wireless. However, the computer froze totally six times in two days and I kept having to turn off manually. A nightmare! And such a problem trying to read and send Emails! It keeps stuttering while I type this. Maybe I should put it in fast. So slow responding and I have major panic when it stops. Thank you.