I've experience a lot of ram comsuption using gDesklets so I decided to use gkrellm for fc2 and here are the themes for gkrellm

1. create a folder in your home directory and name it gkrellm (if you want)
2. download both packages to the gkrellm folder
3. when done open terminal and type su and pass to become root:

cd gkrellm (or what_ever_name)
rpm -ivh * <-this will install gkrellm and themes at same time

now go to redhat panel >System Tools >GKrellm and enjoy people

This is how i replaced gDesklets and GKrellm is easy to configure.
This can also be done via yum:
yum install gkrellm
See screenshot:
screenshot 1