Help please for Packard Bell X6620UK

I have just been given a Packard Bell IExtreme X6620UK and wish to
reformat the hdd and
install Win 7 Pro instead of the Win 7 Home Premium that is there now.

MiniTool Partition Wizard Home Edition v7.7 shows the following
partitions:

Partition Capacity Used Unused
File System Type Status
*.PQSERVICE 12.00GB 8.66GB 3.34GB
NTFS Primary None
*.SYSTEM RESERVED 100.0MB 25.39MB 74.61MB
NTFS Primary Active & Boot
Cackard Bell 459.45GB 90.58 GB 368.87GB
NTFS Primary System
DATA 459.96GB 1.84GB 458.12 GB
NTFS Primary None

I contacted Packard Bell about the PQSERVICE and SYSTEM RESERVED
partitions and they
replied that they were necessary, but would not tell me anything else.

I cannot investigate them because they are not visible in Windows
Explorer.

Can anyone tell me what these partitions are ? Are they necessary if I
format the hdd
and install a bought copy of Win 7 Pro or can they be deleted?

I was intending to delete the two partitions and extend the C:
partition to cover the
then unused space, followed by installing Win 7 Pro onto this
partition after formatting.
I am now unsure, however, because of these two partitions.

Can anyone advise me ?
TIA