USB Safe Removal

Hi.
I’m trying to connect my cellphone (Sony Ericsson) to my computer, using USB.
I’m using recent Vista-compatible drivers, however, the cellphone almost immediately states "session ended, safe to remove".
I gather that this is a Vista feature, that removes the little "safe removal" icon down in the corner of the Windowsbar.
Is there any way to disable this feature for this, or all, USB devices?