Hi !! I have a problem regarding oracle...plz suggest me solution regarding it.....

I had earlier installed oracle 9i with windows XP plateform...then I decided to install
oracle 10g client..to keep this thing in my mind I took cold backup and kept all datafile
control file, redolog file, init.ora file from oracle 9i database and stored in disk drive.
After then I fully removed oracle 9i from system (from registry too) and installed oracle 10g client.....plz suggest me that 9i backup files are still useful to run in 10g client &
what steps necessary for it.....


With Best Regards