Expand VMware Virtual Disk

First, check your vmdk type. If the disk was splited in 2GB files, suggest convert to a single virtual disk. Ex: vmware-vdiskmanager -r sourceDisk.vmdk -t 0 destinationDisk.vmdk
Step 1, Expand Virtual Disk. Ex: vmware-vdiskmanager -x 6GB myDisk.vmdk
Step 2, Boot up Guest OS, WinXP, use Diskpart to merge two partitions. If this disk is system disk, you need copy vmdk to the other. Then mount the other vmdk file and merge its' partitions.