Cruzer 4gb that does not lounch U3

I have a Cruzer 4gb that when I plug it in windows recognizes it but I do not get the CD drive which has the U3 launcher on it.  I can not format it.  I can’t reinstall U3. The drive had U3 on it with a password. 

tried many options from forum but still … cannot start u3 software and put password in… same thing on other computers

please HELP !!!

u3 stopped shipping on all sandisk product back in november of 09. anything manufactured since then does not support U3. if you need password protection there is an application you can download called secure access. it is stickied at the top of the Cruzer board. this is a readers board by the way.