Hi there
You might like to take a look at this
PreSonus FireStudio Project 24-bit/96K Professiona at DV247.COM
Focusrite equivalent
Focusrite Saffire Pro 10 I/O Professional 10 In / at DV247.COM
or this if you might want to have 16 or 24 tracks
PreSonus Firestudio Firewire Audio Interface at DV247.COM
or Focusrite equivalent
Focusrite Saffire Pro 26 I/O Multi-Channel Firewir at DV247.COM
Watch out for driver problems with any of these though, use the forums to which one would be most suited to your set-up/computer
Ask the tec guys at dv247 for advice
Cheers
Anton