Can different transitions be found online..I want a wave like effect.

Not really. There are companies that offer extra transitions (Crystal graphics, OfficeFX) but usually thjey require a player on the show conputer and also they are designed for conference use and are not cheap - FX is nearly $1000 CG is cheaper but probably not as good.. Office 2010 have a range of new transitions of course including RIPPLE which might be what you need. These will ONLY play in 2010 versions though.

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Thanks John. I had found the expensive sites!..thought there might be some cheaper options. Suppose I will have to stick to my normal fade in fade out.