I have an interesting chicken-and-egg problem that I hope someone can help me out of. I have a machine on which I originally loaded White Box. I subsequenty converted to CentOS using the instructions found numerous times in the group -- e.g. get the redhat-package RPM (thus changing /etc/redhat-release), then configuring yum and then yum -y upgrade. Everything has been going fine... that is until I tried installing the rpm-build package. Now I'm getting the message: [root@intranet root]# yum install rpm-build Gathering header information file(s) from server(s) Server: CentOS-3.3 - Addons Server: CentOS-3.3 - Base Server: CentOS-3.3 - Extras Server: CentOS-3.3 - Updates Finding updated packages Downloading needed headers Resolving dependencies ....Unable to satisfy dependencies Package rpm-build needs rpm = 4.2.3-10, this is not available. Which I assume is caused by my version of rpm: rpm-4.2.3-10.WB1 I can't seem to figure out how to convert RPM packages and, of course, I can't simly rpm -e rpm and then use the erased package to install itself. I've tried a simple yum --download-only ... but the dependency check still occurs. Any thoughts on what to try next? TIA, Barry