W2K in a workgroup??

I have a W2K professional and a Win 95 machine in a workgroup. No domain…just running off of netbui…When I go into the Win95 machine from the W2K machine via network neighborhood…i have no problems accessing the Win95 Shares…But when I go into the W2K machine shares from the Win95 machine I get a dialog box telling me, “You must supply a password to make this connection…\\computername\IPC$

I have no user accounts setup…administrator password is blank?? Why is it giving me this password box?