My Virtual Windows XP machine takes up too much space

I have a virtual Windows XP machine running on VMware Server with Ubuntu 6.06 as the guest. The virtual machine runs perfect.

I have alloted 8GB to the machine. However when it takes up 15GB on the disk. My virtual machine consists of the following files:

8.0K    ./Standard XP.vmx

8.0K    ./Standard XP.vmsd

2.1G    ./Standard XP-f001.vmdk

2.1G    ./Standard XP-f002.vmdk

2.1G    ./Standard XP-f003.vmdk

2.1G    ./Standard XP-f004.vmdk

1.1M    ./Standard XP-f005.vmdk

8.0K    ./Standard XP.vmdk

32K     ./vmware.log

36K     ./vmware-0.log

32K     ./vmware-1.log

16K     ./nvram

32K     ./vmware-2.log

1.4G    ./Standard XP-000002-s001.vmdk

1.4G    ./Standard XP-000002-s002.vmdk

2.1G    ./Standard XP-000002-s003.vmdk

1.4G    ./Standard XP-000002-s004.vmdk

20K     ./Standard XP-000002-s005.vmdk

8.0K    ./Standard XP-000002.vmdk

15G     .

Is there any way that I can reclaim some of my hardware space from this machine? Are there any files that I can delete?