Yes but we can do in Module Level

You can not create a load in QTP.  QTP is a functional 
regression testing tool.  QTP can only act like 1 user.  
You need a tool like LoadRunner to actually create a load.

No.
Test Script can be written but load can not be created with
QTP, its basically a regression testing tool.
Yes,the same script written in QTP can be used with ASTRA to
test load.

Yaah! you are Right Guys. As being an Regression Tool we 
cannot emulate Load on the tool as this tool is an 
Regression tool for the revisioning the Test of the 
Application.

NO because load testing is completely releated to 
performance testing and qtp is a completely functionality & 
regression tool.so that we can not emulate the loadtest 
with qtp.

by using start transaction and end trasaction options we 
can parially conduct performance testiong.
And also by using fata driven testing (or loopina one 
functionality using for loop we can parially conduct load 
testing. 
But this can compare with loadrunner. 
by 
g.vijay(SDG)

No,
Load testing can not be done using QTP as it is a 
regression tool.

We can do upto some extent, You can measure how long it 
takes to run a section of your test by defining 
transactions.

Test Script can be written but load can not be created with
QTP, its basically a regression testing tool.
Yes,the same script written in QTP can be used with ASTRA to
test load.

then which tool is best for load/performance testing