unserialize error when moving to new server

Hi,

I am having EE 1.6.9. I am trying to move the site to new server. After moving, I configured the paths in Admin -> System Preferences -> General Configuration -> Captcha Preferences -> Emoticon Preferences

Admin -> Weblog Administration -> File Upload Preferences

Admin -> Utilities -> Extensions Manager -> FieldFrame

My Account -> Extras -> Quick Links.

I checked in database and found the data for weblog are stored as a serialized string. This string has image path. The path of this images are pointing to my old site. If i do string replace, there is a unserialize error. This error will occur as the array is different while doing serialization. Is there any way to point the path of images or few HREF links to new server path in the weblog data ?