They definitely offer the SSD, but I don't know if they set up the SRT. Essentially, you connect the HDD and the SSD to the same controller and enable RAID in the BIOS. Watch that video I linked you to - it really explains it well with my favorite - pictures!
One thing I would ask of where ever you get your new PC is whether the HDD is SATA III. At eCollegePC, it doesn't indicate if it is SATA II or SATA III.