Storing Default Parameters As User Preference

Need some guidelines:

I wanted to create a report with parameters. The users will access the reports via
http://localhost/Reportserver/myReportName

Now, each user will have their own default parameters and would like to be stored(somewhere!!!) as "user preference", so nexttime when they access this report it should display data with the "user preference" parameters.

Can someone give me some advise to implement this.

Many thanks.