the ruu overwrote your custom recovery,wich is no big deal. since you have the s-off bootloader,you can easily install your recovery,just like you did with the htcdev hboot. you should still have it in your miniadb folder,so just place the phone in fastboot,open cmd,and flash recovery with this command:
fastboot flash recovery recoveryname.img
reboot the phone with fastboot reboot
for a custom rom,i might suggest your first one to be a somewhat stockish one,so id recomend this one: http://forum.xda-developers.com/showthread.php?t=726467
as doogald mentioned,youre on an older radio,so you can update that if you want by downloading this zip file and installig it in recovery: http://forum.xda-developers.com/attachment.php?attachmentid=297006&d=1269194832
you can install the radio and rom at the same time if you want,or you can do one first,then the other later.
youll just download,transfer to sd card,then flash them in recovery like you did the other files.
whenever yuo change roms,its not a bad idea to do a "full wipe" in recovery wich consists of:
bobcat has a good guide on flashing roms here:
Flashing Rom's without a PC
you can subsitute steps 3-9 with "download on to pc,transfer to sd card" if you dont want to use the phone itself to do the downloading.
just holler if you have any more questions!