Pen Drive not viewed

Hi!
I recently purchased a 4 Gb Pen Drive (http://www.emtec-international.com/it/produit.php?categorie=STMOB&gamme=CLES%20U SB&ss_gamme=ZOO) Mac OSX compatible, but if I plug it in different USBs on my iMac (OSX 10.6.4), nothing happens and it is not showed neither on the desktop neither in Finder.
If I plug it in my Windows XP laptop it works perfectly and I see it's formatted in FAT32.
Can you help me to solve this problem?
Thanx.
Francesco

Hello bhad9,
You can use your pen drive on your XP machine and your tablet, but not the Windows 7 machine.
This could be caused by any of the following:
Your drive does not have a drive letter assigned to it in Disk Management
Your USB driver may be corrupted or not fully installed.
Can you see the Pen Drive in Disk Management when its plugged in?
If you see your drive showing but it does not have a drive letter assigned, do the following:
EXAMPLE using a Mushkin Pen Drive.
Open Computer Management by clicking the Start button, right clicking on Computer and then click Manage.
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Click Disk Management. Look for a drive that does not have an assigned drive letter and is not labeled as System Reserved.
Note: The System Reserved drive is reserved by Windows.
Right-click the unlabeled drive and click Change drive letter and paths…
Click Add and then click OK to select the first available drive letter.
If the Change drive letter and paths… option is not available, make sure that the drive is Online.
If the drive is Offline, right-click the disk number and click Online.
IF this is not the case let me know. Then we will see if the driver needs to be uninstalled and reinstalled for the Pen Drive

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