Lacie External Drive not recognized

I just unpacked and turned on my new iMac Desktop. Then I plugged in my Lacie Desktop external drive (with all my files, iTunes and iPhoto data) to move all of my files. But the Lacie Drive doesn't show up anywhere on the iMac when plugged in.
I've tried turning both the drive and iMac off and on again
Disk Utility does not see the drive
i tried all USB ports just in case one was defective
the drive does show on older laptops, incl. one with Lion installed
I've contacted Lacie tech support but they aren't responding
What can it be? what can I do??

MeganEllen wrote:
What can it be? what can I do??
Why are you repeating yourself? That's unnecessary and disconcerting. As for your LaCie issue, return it and get one from a manufacturer that is responsive and makes things that work. FWIW, I never use USB HDs. They're slow when compared to FireWire ones. I roll my own and never have issues. These are the latest combos:
Macally GS350SUA Hi-Speed eSATA/1394A/USB2.0 Storage Enclosure for 3.5inch SATA HDD w/Seagate ST3750640AS Barracuda 750 GB SATA 3.0GB/s Internal Hard Drive
Macally GS350SUAB Hi-Speed eSATA/1394A/1394B/USB2.0 Storage Enclosure for 3.5inch SATA HDD w/Hitachi 1TB HD31000 IDK/7K Deskstar  SATA 7200 RPM 32 MB Cache Internal Hard Drive
Macally GS350SUAB Hi-Speed eSATA/1394A/1394B/USB2.0 Storage Enclosure for 3.5inch SATA HDD w/Seagate 2TB ST32000542AS Barracuda® Green SATA 3Gb/s Hard Drive

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