backspace disabled but i don't know why

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1.the merge cells option is disabled, i don't know why

I can't merge any cells because this icon and menu option is disabled (grey). 
how can i undo this, or does anybody knows why this has happend?

2.Can't get to a website and don't know why

3.ISAKMP NAT problem (I know it can be done but don't know how)

I'm setting up an IPSec tunnel between two Cisco routers and a
SonicWall 2040 in between. One of the routers (1721) is on a private
network (192.168.16/24) behind the firewall; the other cisco box is
somewhere on the Internet.

The tunnel is set up by the router on the public net and the firewall
is configured to allow IKE, IPSec and port 5400 both ways. The router
on the private LAN can be addressed from the outside because the
firewall provides a one2one mapping of a public address to
192.168.16.3.

When the router on the Internet sets a tunnel to my 1721 (the public
NAT address!), its log shows:

Jan 13 14:10:55.094: ISAKMP:(0:1764:HW:2): processing ID payload.
message ID = 0 Jan 13 14:10:55.094: ISAKMP (0:268437220): ID payload
        next-payload : 8
        type         : 1
        address      : 192.168.16.3
        protocol     : 17
        port         : 0
        length       : 12
Jan 13 14:10:55.094: ISAKMP:(0:1764:HW:2):Expected CORP_Sycada profile
doesn't match, aborting exchange

The router probbaly expects the public IP address of my private
router. How can I tell either my router or the other router that
192.168.16.3 is equivalent to its public IP address?

crypto isakmp policy 1
 encr 3des
 hash md5 
 authentication pre-share
 group 2  
crypto isakmp key xxxxxxx address x.x.x.x
!         
crypto ipsec security-association lifetime seconds 86400
!         
crypto ipsec transform-set Sycada esp-3des esp-md5-hmac 
!         
crypto map Sycada 1 ipsec-isakmp 
 description crypto map Sycada
 set peer x.x.x.x
 set transform-set Sycada 
 match address 100
access-list 100 permit ip any 192.168.101.0 0.0.0.255

rgrds rgr

Sycada Nederland

4.When I open a word, it pops up and don't know why

When I open a word file, a window pops up saying "The command cannot be 
performed because a dialog box is open. Click OK, and then cloase dialog 
boxes to continue" I don't know why. 
Can you help me?

5.Cannot sucessfully download updates and don't know why

My spell check does not work on MS 2003.  I went to the MS site for updates 
and there were 3.  I clicked to download but it said it was unsuccessful but 
it did not say why.

6. Never mind... its working now (don't know why)

7. run-time error 13 - Type mismatch (don't know why)

8. disabling the "Don't know how to get started?"