I have a bad MOBO or CPU in an emachines T3256. It's a AMD ATX MOBO/CPU. Will an intel MicroATX work in that machine? Can I use my current memory (both are 184 pin DDR, PC2700). Also, should the HDD work with the intel board? If this will work, what CPU is best, intel Celeron D 351 3.2Ghz or Pentium D 805 2.66Ghz?