Download Restore Manager for Dell DR4100?

I've got an older Dell DR4100 which I need to blow away and start again, the system advises to use the Dell Restore Manager software which will recreate the disk layout and so forth, however I see that Quest took over the support for these boxes from Dell.

My box was purchased long before Quest took over the support, and as it's now out of maintenance their system will not let me download the recovery software.

Does anyone know where I can get it from at all please, as without it my DR is currently just an oversized paperweight!!