AM3 vs AM2+

Hi, Just seeking a bit of advice before I buy but if I get an m/b with a socket AM2+, will I be able to run an AMD socket AM3 CPU? Also for the mean time until I purchase the new CPU would I be able to run an AMD Athlon 64 3500+ socket AM2 in the new m/b with socket AM2+?
Thank you

geek_havixx73, Feb 9, 2:29 pm