It gets a little complicated obtaining a process handle from the object returned by Win32::Process. You have to ask it for the process id, and then use the Kernel API OpenProcess() to convert that back to a native process handle so that you can call GetProcessTimes().

Once you have the times, they come back as 64-bit values of 100 nano second periods since 1/jan 1601. Unpacking and formating the these time into something reasonable is awkward. My formatting routine is very lazy and doesn't do leading zeros, and you'll need to check the math on the conversion of the kernel and user times. There may be APIs available to do the formatting and converting.

#! perl -slw
use strict;
use Win32::Process;
use Win32::API::Prototype;

$|++;

ApiLink(
    'kernel32',
    'BOOL GetProcessTimes(
        HANDLE hProcess,
        LPFILETIME lpCreationTime,
        LPFILETIME lpExitTime,
        LPFILETIME lpKernelTime,
        LPFILETIME lpUserTime
    )'
) or die $^E;

ApiLink(
    'kernel32',
    'HANDLE OpenProcess(
          DWORD dwDesiredAccess,
          BOOL bInheritHandle,
          DWORD dwProcessId
    )'
) or die $^E;

ApiLink(
    'kernel32',
    'BOOL FileTimeToSystemTime(
        FILETIME* lpFileTime,
          LPSYSTEMTIME lpSystemTime
    )'
) or die $^E;

sub SystemTimeToString{
    my( $y, $M, $dow, $d, $h, $m, $s, $milli ) = unpack 's8', $_[ 0 ];
#    $dow  = (qw[ Sunday Monday Tuesday Wednesday Thursday Friday Satu
+rday ])[$dow];
#    $d = ( qw[ undef Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 
+] )[ $d ];
    return "$y/$M/$d $h:$m:$s.$milli";
}

Win32::Process::Create(
       my $pObj,
       "C:\\windows\\system32\\notepad.exe",
       "notepad temp.txt",
       0,
       NORMAL_PRIORITY_CLASS,
       "."
) or die $^E;

print 'Paused'; <>;

my $pid = $pObj->GetProcessID;
print "pid: $pid";

my $hProc = OpenProcess( 0x0400, 1, $pid ) or die $^E;
print "hproc: $hProc";

my( $c, $e, $k, $u ) = ('0'x8) x 4;
my( $cs, $es ) = ('0'x16) x 2;

GetProcessTimes( $hProc, $c, $e, $k, $u ) or die $^E;

FileTimeToSystemTime( $c, $cs ) or die $^E;
print 'Process created: ', SystemTimeToString( $cs );

FileTimeToSystemTime( $e, $es ) or die $^E;
print 'Process   ended: ', SystemTimeToString( $es );


printf '%7.5f %7.5f', map{ unpack( 'Nx[N]', $_ ) / 10e8 }$k, $u;

__END__
P:\test>326090
Paused

pid: 3616
hproc: 72
Process created: 2004/2/3 4:53:50.390
Process   ended: 2004/2/3 4:53:50.796
0.00000 15.16372
[download]