new to android forums and need help

[demon 340]

I recently bought an htc evo and it was already rooted and apparently there is no backup image to restore to. I went to the local sprint store and they were pretty upset that this phone was rooted. The restored my phone and it went silly today and I keep getting this error that HTC Sense process.com.htc (launcher) has stopped unexpectedly. How do I fix this and get my phone back?