merging partitions

I bought my daughter a dell laptop. It's windows 7 64bit home premium. It came with dell recovery software, which I don't really care for. Dell created a 20gb recovery partition and a 100mb partition which I believe is for diagnostics but is empty. I purchased acronis true image 2012 home for backup software and placed the backup on an external hard drive. For reinstallation purposes it's labeled as F:\ for the recovery partition and G:\ for the operating system. I've read somewhere else that dell put the boot files in their recovery partition, not in the C:\ drive. How can I tell? If it is indeed in the C drive partition will EaseUS merge the two other partitions into C drive to make one complete active partition after deletion of the recovery and diagnostics partition? Has anyone used EaseUS for windows 7? Also at this time I don't have her laptop, she does